Bling!

Christie Brinkley's ex-husband, Peter Cook, popped the question to another blonde bombshell ... but this one's just old enough to legally pop a cork.

Peter is now engaged to tie the knot with 21-year-old Alba Jancou. He dropped down to one knee and proposed to the college hottie last month outside a church in Santorini ... according to the NY Post.

Peter's been hanging out with Alba since at least this summer, showing her off at some fancy parties in the Hamptons. We know -- age is just a number, but this is kinda wild.

Peter and Christie's daughter, model Sailor Brinkley-Cook, is the same age as Alba ... her new stepmom-to-be.

Alba is currently a student at Tulane University in New Orleans, and according to her social media, she'll be graduating in 2021. As for the other important date in her life -- no word on when the happy couple's planning to walk down the aisle.

BTW ... the age gap is the same as Dennis Quaid and his fiancee, Laura Savoie, who got engaged earlier this month in Hawaii.

Best birthday EVER?!?!

Boston Celtics star Jaylen Brown is fresh off a brand new, $115 MILLION deal ... and if that's not sweet enough, the baller got a sick, $20k chain from his good buddy, A$AP Ferg!!

TMZ Sports has learned ... the "Floor Seats" rapper wanted to do something extra special for his friend's birthday, so he hit up Big Will at WS Jewelry and the guys collabed to make him a one-of-a-kind piece.

We're told the piece comes with 15 carats of natural green and white diamonds shaped in Ferg's signature logo ... and it's worth around $20k.

The back of the pendant also features Jaylen's jersey number, 7, and his name.

The video is awesome ... Ferg and Big Will were there to celebrate with Brown ... and the dude had a BIG smile on his face when they presented him with the present.

Happy birthday!!

Billie Eilish is one major step closer to being reunited with the ring she believed was "stolen" at Austin City Limits ... because a concertgoer says she's turned it over to event staff.

Here's the deal ... Billie was performing at ACL earlier this month when she came down off the stage and started hugging and singing with fans. But, at the end of the song she ran back onstage and told the crowd, "Somebody stole my f**king ring!!!"

Now, a video circulating on social media shows a woman asking security to pick up the ring off the ground and hand it over to her ... which he did.

We spoke to the woman in the video, and she acknowledges the footage looks shady -- as if she did pocket the teen singer's ring -- but she claims she simply took a picture with it and then turned it over to an ACL staffer. She says she hoped it would be returned to Eilish.

As it turns out, Billie's missing ring isn't super expensive bling ... it's actually costume jewelry from Adina's Jewels, and costs less than $100. Probably why she wasn't all that busted up about it onstage.

Drake really DOES need some really big rings ... 'cause Drizzy just copped a Toronto Raptors championship ring ... and then got an even CRAZIER one done for himself!!!

TMZ Sports has learned ... not only did the Champagne Papi get the "official" ring the Raptors received during their opening night ceremony on Tuesday ... he also hit up Jason of Beverly Hills to get him a one of a kind ring to commemorate his team's title run.

The piece is incredible -- it's got 30 carats of diamonds, which is more than any other championship ring in NBA history.

Jason tells TMZ Sports ... "Drake had me fly to Turks and Caicos for an emergency design meeting."

"It's a championship that's dear to his heart and he wanted to create an over the top ring that not only paid homage to his city but made a statement above and beyond anything else in history."

As for the rings Kyle Lowry and Co. received on Tuesday ... those have a face made of 74 diamonds (to represent the number of team wins during the season), one large diamond, and custom-cut baguette diamonds to make up the Toronto skyline.

The outer edge of the ring is lined with 16 rubies to go with each roster member's numbers ... and the inside of the ring includes personal messages for each player.

According to the Raptors, it has more than 640 diamonds total -- which is a record for most on any pro-championship ring.

Dr. Paul Nassif dropped a small fortune to spoil his new wife, Brittany Pattakos ... with some ritzy bling leading up to their wedding.

The star M.D. from "Botched" commissioned Harakh Mehta of Harakh Jewelers to get the ball rolling ... first with a massive engagement ring that cost Nassif around $165k. Mehta tells us the engagement ring -- pure platinum, BTW -- is practically an iceberg ... 3.15-carat center stone stealing the show (behind Brittany, of course).

We're told the jeweler also created not one but 2 wedding bands for Brittany -- 2 full eternity diamond bands totaling 1.24 carats crafted in pure platinum. Price tag -- around $9k.

So, why 2 wedding bands? Mehta says, "We specially crafted two bands rather than one to surround the engagement ring which marked the two milestones in their life."

Mehta tells us it took around 4 months to make the rings. The doc proposed to Brittany back in June and they tied the knot in L.A. followed by a reception in Santorini, Greece earlier this month.

BTW ... Nassif sang to Brittany at their wedding. And, no ... he didn't botch it!!!

Dennis Quaid seems ready to walk to the altar again -- the guy's reportedly engaged to his WAAYYY younger girlfriend ... and we got what looks like the first photo of the ring.

TMZ has obtained a photo of Dennis with his 26-year-old GF (and now, apparent fiancee), Laura Savoie, holding up her left ring finger, which has a giant rock on it. We're told this photo was taken Friday night minutes after DQ proposed to her at Turtle Bay in Oahu.

Apparently, a wedding party was happening nearby, and a couple that had just gotten hitched invited Dennis and Laura to pose for a pic to celebrate the dual occasions. Mazel!!!

Laura's a grad student at the University of Texas. She and Dennis have been going out since the summer, so Dennis -- who's 65, BTW -- must truly be head over heels for this gal.

As we reported ... Dennis and Laura were spotted vacationing in Hawaii just earlier this week, where they were getting their paddleboard on at Waikiki Beach. They've been seen out together a lot, notably in August while boating on Lake Como in Italy.

This would be Dennis' fourth marriage -- he's been hitched to Kimberly Quaid, Meg Ryan and P.J. Soles, and had children with the former two women.

Cardi B isn't kidding when she raps about liking diamonds, stunting, shining and million dollar deals -- enter Offset with her whopping 20-carat birthday gift, which IS worth over SEVEN FIGURES!!!

The Migos rapper reached out to Pristine Jewelers in NYC about 9 months ago -- and owner  Avi Davidov tells us Offset made it clear he was looking to score something incredibly special for Cardi's 27th birthday.

We're told Offset already had an idea in his mind -- a heart-shaped diamond surrounded by smaller hearts. The center stone is a brilliant 20 carats. The diamond ring's been dubbed the Titanic Diamond for its size and similarity to the Heart of the Ocean rock from the movie. It's complemented by a band of smaller diamonds that total 25 carats.

We're told Avi literally hand-delivered the rings on a silver platter last weekend. As we reported ... Cardi was damn near knocked off her heels when she saw the stunning rings.

Forget the Eiffel Tower ... S.F. Giants rookie Mauricio Dubon turned to Paris' version of Mickey Mouse to propose to his smokin' hot GF -- and it worked, 'cause she told him yes!!

Dubon -- one of the top minor league prospects in the MLB heading into this season -- was on an offseason vacay with his girlfriend, Nancy Herrera, when he decided to get down on one knee at Disneyland Paris.

Right in front of a pond and Mickey shrubbery ... the 25-year-old shortstop asked Nancy to marry him -- and she said of course!!

The video is adorable ... the two look SUPER happy -- and Nancy wrote on social media afterward, "I LOVE YOU and what a great blessing to be able to share the rest of my days with my best friend and the love of my life"

Mauricio ain't a star yet -- he's still an up-and-comer in the big leagues ... but he sure knows how to pick out a ring -- check out the INSANE rock!!!

Don't worry, Dubon can afford it ... he played on a 1-year, $555,000 deal this season -- and he could be in line for a fat contract if he lives up to his potential in 2020.

Congrats!!!

Erica Mena is turning tradition on its head by buying the father of her upcoming child a lavish gift for the pregnancy ... though you gotta expect Safaree will return the favor.

Sources close to the 'Love & Hip Hop' newlyweds tell TMZ ... Erica dropped nearly $50k on a 14-carat rose gold, diamond Cuban chain for her new husband. The chain's encrusted with 36.65-carat diamonds ... and appropriately comes with a white gold "Daddy" lock.

We're told Erica gave Safaree the "push present" this week because he's on his way to becoming a dad for the first time ... so she wanted him to have something special.

Cardi B celebrated her 27th birthday with enough ice to sink the Titanic.

Offset did not disappoint ... first a huge dinner spread which featured lobster, a seafood tower, steak, truffle mac 'n cheese and lots more. Rose petals were scattered about the room for a romantic touch.

Then the blinding present is unveiled ... Cardi's hubby presented her with a gigantic diamond ring, appropriately called the Titanic Diamond. It was crafted by NYC-based Pristine Jewelers.

That wasn't all ... Cardi also got a giant pendant with a picture of her daughter, Kulture, in the middle, courtesy of her pal, Layton Greene.

Kulture was also blinged out, with more than 100 carats of diamonds in necklaces and bracelets.

But, wait, there's more. Cardi scored some Birkin bags to add to her collection -- she now has 10. There was even a cake in the shape of a Birkin bag. After the party Cardi showed off her Birkin bags in all different colors saying, "taste the rainbow."

Before the shindig, Offset posted a video with some of the couple's memorable moments, writing, “MY BEST FRIEND THE LOVE OF MY LIFE, MY GUARDIAN ANGEL, KK’s MOM, THIS DAY IS YOUR SPECIAL DAY I LOVE YOU, HAPPY BDAY!!NOT JUST ME AND FAMILY BUT THE WORLD LOVES YOU.”

Justin Bieber took a bling cue from the Kardashian clan -- opting to use their private jeweler to gift himself a super-rare watch that's worth a pretty penny.

Sources tell us that the gold watch JB debuted on Instagram Monday -- which he called "a lil wedding gift" for himself -- is actually quite exceptional, in that it's from a rare, vintage luxury line of watches ... with this one retailing somewhere in the 6-figure range.

The watch is an Audemars Piguet Royal Oak 5402BA, a line that dates back to the 1970s ... and that isn't really made all that much anymore. Current models of AP Royal Oaks have an average price tag of around $50k ... but we're told JB's was worth at least double that.

Now, it's unclear if Justin ended up paying that amount himself -- but if he wanted to auction off the timepiece ... he could probably get in the ballpark of $100k, and possibly more.

Megan Thee Stallion's getting serious with her boyfriend/fellow rapper by buying him a seriously expensive birthday gift ... with a pretty romantic message attached.

The "Hot Girl Summer" rapper gifted Moneybagg Yo with a blinged-out, half-heart pendant. As you can see, there are 2 chains with 2 half-heart pendants -- his and hers.

Before ya start thinking the half-heart pieces are kinda basic, know these didn't come cheap for Megan. The complete set includes 120 grams of 14-karat rose gold and 40 carats of VVS diamonds blanketing the pendant.

Translation: Serious drip!!!

Jermell Charlo ain't fighting this weekend ... but all eyes are gonna be on him anyway, 'cause the boxing star just copped an insane amount of jewelry worth $553k!!!

The former WBC light middleweight champ is gonna be iced out when he hits up the Errol Spence Jr. vs. Shawn Porter boxing match at Staples Center on Saturday ... with a haul that would make Floyd Mayweather blush.

Charlo hit up celeb jeweler Iceman Nick for the task for the watch, chain, pendant, rings and bracelet order. Here's the breakdown:

Justin Bieber has a lot of reasons to smile with his wedding ceremony fast approaching, and now he's got one more ... in the form of some new pearly whites purps!!!

Sources tell us the singer got this brand new grill from L.A.-based jeweler Gold Teeth God. It's a purty purple color -- lavender actually, as we're told -- and covered in imported 5-carat diamonds from Israel.

There's also this ... our sources say the bling can fetch up to $25k on the market, although it's unclear if that's what the Biebs actually paid for it.

Still though ... that's a whole lotta fancy in his mouth.

Deshaun Watson's 24th year is off to an ICY start ... 'cause the NFL superstar got a one-of-a-kind $25k chain for his birthday!!

The Pro Bowl QB had a birthday bash at Bisou restaurant in Houston on Monday ... celebrating with his Texans buddies, DeAndre Hopkins, Andre Johnson, Will Fuller, Carlos Watkins and Nick Martin.

Celeb jeweler Iceman Nick was also present for the party ... and he didn't come empty-handed -- gifting Watson with a custom DW4 chain!!

We're told the piece is worth $25k and made with 14k gold and 12 carats of VS1 diamonds ... and Nick was able to whip it together in just 2 days!!

The whole party was lit ... it even included live snake dancing and a bunch of tequila.

Oh, and there was an actual ICE SCULPTURE to go with the ICE NECKLACE!

Others in attendance include influencers Jilly Anais and J Mulan ... as well as NFLer Bruce Ellington.

Odell Beckham wasn't lying ... the Cleveland Browns superstar is rocking a pricey watch on the football field AGAIN -- this despite heavy backlash from when he wore one last week.

Odell was spotted in pregame warm-ups just minutes before the Browns took on the Jets on Monday night wearing what appears to be another Richard Millie piece.

While no longer Browns colors ... this one still seems just as expensive -- if not more so -- with acrylic and flash all over it.

Of course, Odell wore a Browns-colored one during Cleveland's loss last week ... and caught hell from plenty of people for sporting the wrist ice during a game.

But, Beckham fired back after the matchup, saying he'd do it again this week ... adding, "If I want to wear it, I will wear it."

Seems he's following through ... and initial reports say this watch could be worth up to $2 MILLION!!!

There was talk Odell could be fined for wearing the watch during games ... but the league decided not to punish the wideout -- leaving the door open for him to do it again Monday.

Question now is, will his game match the level of swag on his wrist???