NY Jets wide receiver Eric Decker may have found his second calling ... MUSIC VIDEO VIXEN ... 'cause the guy plays "sexy model" in his wife's new video ... complete with bad fake guitar playing.

FYI -- Decker's married to country music superstar Jessie James ... who just released a video for her new song, "Clint Eastwood."

The video has all the traditional staples of a country song -- a trailer, daisy dukes ... and dudes playing guitars.

One of those guys is Decker ... who chews on a stogie and pretends to play along in Jessie's backup band while she belts out the main tune. It's pretty funny to watch.

Celebrate RiRi's big day with 27 of her sexiest Instagram pics -- one for every candle on her cake, cake, cake, cake.

The apprentice has become the master ... so says former NBA star Jalen Rose who tells TMZ Sports in the battle of the bods, he's riding with Jen Selter's MOM.

The 21-year-old ass model posted a mother-daughter bikini pic Wednesday ... showing off her 47-year-old mother's insanely sculpted physique ... and the Internet went wild.

We asked the ESPN analyst to pick just one ... and Mr. Rose put it this way -- Jen's mom is on Varsity ... Jen's on J.V.

Apparently, the apple bottom doesn't fall far from the tree.

Here's 21-year-old butt selfie goddess Jen Selter (right) posing with her 47-year-old mom Jill Selter (left) ... showing off their incredible mother-daughter physiques in tiny white bikinis.

Jen -- whose ass has a 5 million person following on Instagram -- says her mom hits the gym 4 to 5 times a week ... and clearly, it's paying off.

FYI -- Jen is also her mother's personal trainer ... so ... good work!

Paris Hilton's ENORMOUS boobs are fake, but not surgically fake.

Paris will not speak out publicly about her breasts, but we know the deal. Paris says privately she's had no surgery, no stem cell treatment, no artificial enhancements whatsoever, and she's annoyed people think she'd mess with her breasts.

So what is it? The new "Paris Hilton Push-Up Bra" ... and after meticulous research, our photo dept. analyzed Paris' boob pics -- and it appears she's a truth teller.

Nothing to see here folks ... except boobs.

It ain't just standing around and smiling ... the super hot models in the Sports Illustrated: Swimsuit Edition had to bust their perfectly sculpted asses for those iconic shots ... and we've got footage of the women in action.

The rock climbing ... the sand storms ... the punishing waves ... it was all captured by "SI: The Making of Swimsuit 2015" ... a 5-part series that will air this weekend on Travel Channel.

It's pretty crazy stuff -- you see all of the challenges that smokin' hot models like Gigi Hadid, Hannah Davis and the rest of the crew had to overcome to get those perfect shots.

Plus, have you ever seen a model rock climb in a thong bikini before?

The world is so cold and unfair, and Prince made it that way ... by forcing model Abigail Ratchford to remove her nearly naked Valentine's striptease from Instagram.

Ratchford pulled out off all the stops for a "Fifty Shades of Grey" style Valentine's Day striptease -- which is awesome -- but unfortunately she set it to Prince's 1991 hit "Gett Off."

It's ridiculously hot, but nobody uses Prince but Prince. Sources close to Abigail tell us his label, NPG Records hunted her down and demanded the video come down immediately.

Prince notoriously scrubs unauthorized use of his music from the 'net ... and apparently there's no "smoking hot" exception. Still, 30,000 people LIKED the clip before its demise.

Abigail reposted the vid with a different song -- Janet Jackson's "Feedback" ... but it's just not the same.

Seriously, Prince ... we thought you, of all people, would appreciate a "Sexy M.F."

This just in from Katie Couric ... America's sweetheart has cleavage and she ain't afraid to show it off ... even at 58.

The former TV host/anchor was looking good in a low-cut one piece down in Barbados. She hit the beach with new hubby John Molner -- and even got a little frisky in the water.

Catch a wave and check out 10 crazy photos from the shoot below. Surf's up!

Sure, Orlando Bloom's had his share of skinny chicks … Kate, Miranda, etc. -- but would he ever date a plus-size girl? How about a plus-size MODEL?

Pay attention, he's about to answer ... as soon as he stops laughing his ass off.

Before Hannah Davis ... Minka Kelly ... Jessica Biel, Alba, Minnillo, Lima, etc. ... there was Vida Guerra -- and now she's on a mission to prove she's Derek Jeter's hottest ex.

Guerra (40) -- who shot to fame as an ass model -- tells TMZ Sports she respects Hannah Davis (24) and likes her S.I. Swimsuit Edition cover, but wanted to "respond" with a sexy shoot of her own.

Hence the photos you see before you.

"Hannah is Derek's type for sure, he's always liked tall girls ... but she was like seven when him and I dated," Guerra says.

"Curves are in -- and I have all of those."

#Truth

Giuliana Rancic hit the red carpet at the Grammys and everyone noticed.

The TV host hobnobbed with celebs before the show. Saturday, she tweeted about a pre-Grammy feast, saying, "Tons of sushi and finishing off an entire bread pudding. #dinnerofchampions #whateverittakes."

Hey Rory ... you seein' this?

Check out these pics of tennis superstar Caroline Wozniacki -- featured in her very own spread in the Sports Illustrated Swimsuit Edition.

It seems Wozniacki's really let loose since golfer Rory McIlroy broke off their engagement last year -- she's been on several girls-only trips with her BFF Serena Williams ... and started posting all sorts of hot bikini selfies.

And now she's upped her game in the new SI pics ... even showing off her ass.

Caroline isn't the only athlete in the mag -- UFC badass Ronda Rousey also got a spread.

Stay tuned for those, but in the meantime ...

With their team in peril, nothing brings a quarterback and a tight end together like a photo shoot with a hot Sports Illustrated bikini model.

SF 49ers QB Colin Kaepernick and Vernon Davis hooked up with Samantha Hoopes for a photo shoot for Levi's jeans ... and despite the crappy weather, Hoopes looked like she was ready for the beach.

As for Colin and Vernon, it looked like there was some friendly competition for Sam's attention -- and they even threw some friendly zingers at each other.

It doesn't appear Samantha has a BF ... but it seems she has a thing for football players ... and Colin happens to be single.

Madonna's ass probably couldn't make it in a Nicki Minaj video these days ... but that's not stopping her from exposing it like it's 1992 again.

The 56-year-old arrived at Staples Center for the Grammys in a sexy matador outfit, and decided to get medieval on photogs -- by hiking up her dress and showing off her aging cheeks.

Later on stage, her butt took on a bunch of half naked masked men with horns.

She keeps getting older, but her ass is ... also getting older. She just hides it well.