Summer/Beach

Arianny Celeste and her equally hot homegirls are knocking out the beaches in the Bahamas right now ... and tops are optional.

Unclear where the UFC Octagon Girl's hangin' loose in the video ... but Arianny and friends are clearly feelin' themselves, jammin' out to Manu Chao's old-school track about loving life (and weed).

If you like what you hear, Celeste -- an aspiring recording artist -- says you can cop her new single that drops on Friday.

Or ... you can just drink in her other talents. Your call.

Matthew McConaughey's just a beach bum these days ... who happened to find his way on stage with Jimmy Buffett to dance along to one of his legendary island jams.

The Oscar-winning actor's in Miami shooting for his upcoming film, "The Beach Bum" ... and showed off his groovy moves while Buffett played his hit song, "Volcano," during one of the scenes.

McConaughey plays a rebellious stoner named Moondog in the Harmony Korine film, and judging by the vid ... Moondog's in paradise when Buffett's rocking out.

"The Beach Bum" comes out in 2018.

David Beckham's beach bod is unlike any dad bod you've ever seen ... you're welcome.

The 42-year-old -- cool dad status in full effect -- hit up Malibu Sunday with a bunch of his kids to cool off after a blistering weekend in Los Angeles. A little boogie boarding did the trick to cool the brood in the ocean.

Perhaps the only disturbing thing we see in this family outing -- using a beach volleyball as a futbol.

There's no doubt Jason Momoa was born to play 'Aquaman' ... he was like a rock in the surf, making sure his fish wife played by Amber Heard didn't get swept away in between takes.

Jason and Amber filmed scenes for the upcoming blockbuster on the Gold Coast in Australia.

They've been down in Oz for months but this is the first look of them together in Aquaman's natural habitat. Jason held his ground even with out Aquaman's trident.

Aquaman vs Ocean ... 1-0.

Seasons change, but Johnny Manziel's future wife, Bre Tiesi, doesn't change (out of her bikini) ... 'cause she's still killin' the 'gram with super hot, nearly-naked photos, even though it's nearly Fall.

We were just casually browsing Bre's social media when we noticed she's gone on a bikini barrage the last couple weeks, and we thought the fair thing to do was to bring it to you guys.

Hilary Duff celebrated Labor Day with her son at the beach, and buried any ill will for her ex-husband in the sand ... all in the name of co-parenting.

Hilary and her ex, Mike Comrie, spent Monday in Malibu with their 5-year-old son, Luca. Hil was rockin' her usual 2-piece in the water while Mike chilled onshore.

Getting together for some R&R with their kid is right up the former couple's alley, post-divorce. They went on a family vacay last year to Maui ... so Labor Day teamwork seems to be a walk in the park for them.

Bruce Springsteen is The Boss wherever he goes ... and that especially applies when he's soaking up some sun aboard the most popular yacht in celebdom.

Bruce was seen lounging Wednesday on David Geffen's yacht off the coast of Ibiza -- with his wife, Patti Scialfa, hanging out nearby in a robe. Calvin Klein was also there with his model bf, Kevin Baker.

Bruce started out in white swim trunks, but then swapped 'em for a darker pair ... which he eventually yanked up to catch some rays on his thighs.

Whoah ohhh ... he's on fire.

Heidi Klum is proof ice cream does the body good.

The supermodel showed off her physique Sunday in a black string bikini while on vacay in St. Barts. The 44-year-old smoke show was there with her boyfriend, Vito Schnabel, and her family.

Vito had his usual front row seat for the Heidi show ... as she caught waves and got down and dirty in the sand. If you look closely, there was also a unicorn sighting on the beach.

Lewis Hamilton has a new purpose at the beach ... rep Justin Bieber to a T (shirtless).

The Formula One race car driver was out Sunday on a beach in Barbados, where he was rockin' Bieber's Purpose Tour shorts ... the same ones the Biebs was seen in himself last week.

From the looks of these pics ... Lewis must've thought they were gym shorts, 'cause he's in full beach action mode ... catching footballs and hitting the water.

One thing's for sure -- he's got Bieber's look down lock, stock and barrel ... from showing off his tatted torso to even sagging a bit and giving Supreme some free press. Bieber did the same with Calvin Klein ... but he's got an endorsement deal with 'em.

So the question here is ... who did it better?

Kellyanne Conway is following President Trump's lead by squeezing in some fun in the sun while also knocking out her daily White House duties.

Kellyanne was spotted lounging on a beach Sunday in Ventnor, New Jersey - where she owns a beach house - hours after she yakked it up on the Sunday morning talk shows.

Kellyanne didn't squander precious beach time by going to a studio ... she did her live shots from her beach home, steps away from the sand.

Trump is nearby after a mass exodus from the White House for major renovations involving heating and air conditioning.

Chris Christie was nowhere in sight ... hey, when you have a beach to yourself, sunbathers all around you suck.

2:36 PM PT -- Kobe has ... (ahem) ... weighed in on the pics -- saying, "Objects on camera may appear larger than they do in the mirror haha."

He added, "ok...ok...ok. Gimme 30 days #challengeaccepted #mambathick #mambabeast."

Kobe Bryant's chest is just like his jumper ... SMOOTH!

The Mamba ditched the shirt for a relaxing poolside session in Portofino, Italy while on vacation with his family -- but just like the rest of us, he couldn't muster up the strength to put his phone away.

Italy is like a second home for Kobe -- he grew up there while his father played pro ball in Calabria and speaks fluent Italian.

Portofino is poppin' right now for rich people -- Kris Jenner hit up the vacation spot last month. Same with Tiffany Trump. And Heidi Klum was there last week!

Maybe they all use the same waxer?

It's 89 degrees in Miami ... which means MORE HOT CHICKS IN BIKINIS!

Here's Camille Kostek -- ex-New England Patriots cheerleader and possible Rob Gronkowski GF -- struttin' around the beach in a butt baring bikini.

Kostek is currently vying for a coveted spot in the upcoming Sports Illustrated Swimsuit Edition and seems to be a front-runner ... at least, judging by the positive response on social media.

It's clear Camille's feeling herself these days -- check out the bathroom video she posted.

Swag.

"Catfish" star Nev Schulman got wet and wild after his wedding ... in a reception that ditched the banquet hall dance floor for riding waves at the beach.

Nev married his longtime girlfriend, Laura Perlongo, in his father's backyard in East Hampton, NY Saturday -- their 9-month old daughter Cleo was the flower girl -- then took the party of about 100 guests to the ocean.

The kick ass reception featured beach cabanas, a DJ, pizza, beer and glasses of rosé. Nev's 'Catfish' co-star Max Joseph was on hand and gave a speech about the newlyweds ... then took an inflatable flamingo for a ride.

Mazel!

Rachel McCord might not be as famous as her sexy celebrity sister, but she sure looks like a star.

The model and younger sister of "Nip/Tuck" and "90210" actress AnnaLynne McCord hit up the beach in Santa Monica this week ... and had herself a fun and sand-filled photo shoot.

After applying sunscreen to her buns, Rachel enjoyed a smoothie, read a magazine, snapped a few selfies, took a dip and even fed some birds.

Former Miss USA Olivia Jordan and model Allie Ayers partnered up in Miami Beach ... in pastel swimsuits incredibly easy on the eyes.

The bubbly blondes teamed up for a Sports Illustrated photo shoot during Miami Swim Week ... and they definitely work well together. Allie opted for a 1-piece instead of a bikini ... but still managed to reveal more than Olivia.

Jordan was crowned Miss USA in 2015 and went on to place second runner-up in Miss Universe. Allie's one of 15 finalists in S.I. Swimsuit's open casting competition.

Always good to lean on friends ... especially half naked ones.

Jessica Alba's now tanning for 2 ... and has no problem flaunting it either.

The actress put her baby bump on full display as she lounged at the beach in Hawaii Tuesday. Alba's on a babymoon getaway after announcing Monday she's expecting her third child with husband, Cash Warren.

Although she's a mom these days, and expecting another, ya can't see Jessica sunbathing without reminiscing about her most famous beach pose ... from more than a decade ago.

It really is like a fine wine.