Summer's Sexiest Stars THE STEAMY STOCKPILE

It's back-to-school season which means Summer is officially over -- but before you go and buy pumpkin flavored EVERYTHING... take a magical trip through the last few months and soak up all the sexiest pics to hit social media.

Class is in session!

Beyonce & Jay Z Celebrate Bey Day ... Island Style

Beyonce and Jay Z's marriage is SO on the rocks that they're celebrating her 33rd birthday ... together ... with Blue Ivy on an island in the Mediterranean.

Jay and Bey were all over each other -- pretending to enjoy themselves on the beach. Jay played a little paddle ball while Blue played in the sand ... until it was time to head back to their yacht, off the coast of Corsica.

Yeah, we're calling it ... time to kill the break up talk. We should all be this unhappy.

Camilla Parker Bowles Baywatch Babes Got Nothing On Me!

It ain't exactly Selena Gomez and Cara Delevinge -- but Camilla Parker Bowles and her girlfriends are getting their party on Ibiza-style too.

The Duchess of Cornwall flaunted her crown jewels on a boat, while wearing a red one-piece -- that looks exactly like the classic "Baywatch" suits. Suck it Pam Anderson.

No sign of Prince Charles ... seems like Camilla's on a girls-only trip. Look what you're missing, Chuck.

Sad Fact: Selena and Cara have not been back to Ibiza since this all went down. Shame.

Cuba Gooding, Jr. Ass Cracking a Smile ... For America!

Cuba Gooding Jr. flashed his American spirit right along with his ass crack ... during Labor Day weekend.

Cuba sported a Paul Revere hat and stars and stripes board shorts while showing off the dark side of the moon on the beach in Malibu

Cheeky bastard.

Blake Griffin Beach Reconciliation ... With Smokin' Hot Baby Mama

Seems Blake Griffin is back ON with Brynn Cameron -- because the two spent Labor Day weekend TOGETHER ... hangin' out on the beaches of Hawaii with their adorable kid.

As we previously reported, Blake and Brynn have been on-and-off over the years ... and were definitely not together last year when Brynn gave birth to their son Ford.

But all signs pointed to "couple" in Hawaii ... where the two put every other vacationing couple to shame with their insanely ripped physiques.

Sidenote -- Ford's "not impressed" face ... epic.

Shaquille O'Neal BEACH & BOOTY ... During FL Vacation

Call him Shaquille O'NEILL ... 'cause the retired NBA Big Man hit the ocean hard in Florida this week ... with his super hot girlfriend by his side -- and TMZ Sports has the pics.

Shaq and Laticia Rolle were spotted in Cocoa Beach, FL on Tuesday by Louis Barr Photography ... splashin' around on the beach like a couple of teenagers.

FYI -- Shaq and Laticia have been hangin' out a lot this summer ... probably safe to say they're dating.

Soooo ... congrats!!

Laird Hamilton SHOOTS THE PIER ... Insane Surf Video

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When he wasn't saving lives yesterday, surf god Laird Hamilton pulled an INSANE move off the beaches of Malibu -- SHOOTING THE PIER -- and TMZ Sports has the footage.

It's pretty crazy video ... you can see Laird paddling up to the pier on his board and then carefully positioning himself to ride through the wood beams ... without smashing into 'em.

Warning -- DO NOT TRY THIS AT HOME ... it's super dangerous and most people are not Laird Hamilton.

That being said ... watch the video. This guy is unreal.

Gerard Butler Honk, Honk

Dr. Gerard Butler displayed his vast knowledge of the female anatomy ... by administering a mammogram in a public parking lot.

Butler was in Malibu this week with an unidentified smoke show when he started exploring inside her bikini balloons -- following up with a tush grab.

Take one of these ... and don't call me in the morning.

Ryan Seacrest My Yacht Will Run Laps Around Yours

When Ryan Seacrest needs a workout on the open sea, he doesn't settle for a treadmill ... he just takes some laps on his massive lido deck.

We got Ryan and his model girlfriend Shayna Taylor in Saint-Tropez Thursday getting their morning run in ... without ever leaving the confines of their multi-million dollar sea castle.

There will be no Gold's Gym for Ryan, who's making his "American Idol" money work for him in many ways on the French Riviera.

OK, it may not be Bill Gates-level cash ... but Ryan's yacht certainly gives Mr. Microsoft's a run for his money.

The all-black outfits they're sporting seem appropriate for maximum water loss ... but from the looks of it, he hasn't even broken a sweat yet.

Think you two need another lap! It's OK, we'll wait.

John McCain GOES FULL CYBORG Busts Out Robot At Hamptons Dance Party

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John McCain is a DANCING MACHINE -- no seriously, he's like a fully functioning cyberdyne robot ... and this weekend he busted out his mechanical dance moves in front of Jamie Foxx at a party in the Hamptons.

With The Roots providing the beat, the Arizona senator went into full "Zoolander" pop-and-lock battle mode on stage during a benefit at Ron Perelman’s East Hampton estate.

Jamie Foxx tried to mimic McCain's moves -- but the guy just couldn't keep up.

Apparently, McCain followed NJ Gov. Chris Christie ... who also showed off some moves -- but everyone seems to agree, McCain blew the guy out of the water.

Maverick.

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Antonio Banderas Back on the Prowl

Antonio Banderas is single and ready to mingle ... and he zeroed in on an attractive woman while partying in St. Tropez over the weekend.

"Puss in Boots" takes on a whole new meaning.

LeBron James Flies Wife to Greece ... Reveals New Baby Name

LeBron James just stepped up his push gift game -- flying his wife to Greece before she gives birth to their first baby girl ... and, in the process, he unveiled what the baby's name will be.

LeBron posted a pic of himself and Savannah chilling on a yacht with the caption, "Mykonos Greece is spectacular! Push gift to my wife @mrs_savannahrj!"

Oprah & Gayle Partying in Ibiza ... All By Themselves

With most of Hollywood already come and gone from the IT destination spot of the summer, Oprah Winfrey and Gayle King rolled into Ibiza Thursday for a little fun in the sun.

The positive? No crowds. The negative? No crowds. Seriously, these two have to be running out of stories to tell each other.

Stedman's invite must have gotten lost in the mail.

Reese Witherspoon Dancing Queen (GREAT VIDEO!)

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Reese Witherspoon was the funnest girl in Capri, Italy Wednesday ... rocking out the way only white girls can during what looks like a wedding-related event.

Reese whipped her hair back and forth -- champagne in hand -- as she rocked out to "I Will Survive."

It's unclear how many times Anema e Core - The Tavern refilled her glass, but we're guessing several.

Judging from the video, she had enough to get footloose, but she was not "beyond."

We love Reese!

Madonna's Daughter Ssssssmokin!! Lourdes a Big Hit In France

Yes, that's Madonna's daughter Lourdes ... and yes, that's her takin' a drag off something that doesn't seem very tobacco-ish.

The bikini-clad 17-year-old is vacationing in the South of France this week -- sans parents, at least as far as we can see -- and partaking in a little puff puff with friends in between jumps in the Mediterranean.

They must be having a pretty good time, cause that cig's getting smaller and smaller.