Paparazzi Photo

We know this ... "WAGS" star Nicole Williams and her hot model girlfriends won't come home with many tan lines -- her bachelorette party is tops optional.

Nicole, who's marrying ex-NFL star Larry English, is over in Hawaii with her crew (including Natalie Halcro and Olivia Pierson) and when they took to the high seas Thursday ... some bikini tops dropped.

Models Shanina Shaik, Angelica Lee and Sharina Gutierrez and many more are on hand.

Basic guys dreaming of dating Malia Obama can take a seat ... the former First Daughter looks to have a suitor who is anything but basic.

Malia and the mystery guy were cruising through SoHo Wednesday night -- looks like they had a 3rd wheel girlfriend with 'em though. As for the dude, he was pretty stylish in a long black coat and knitted cap.

More than anything ... we know he's TALL. Both Malia and Barack are 6'1", and this guy looks to have a good 3 inches on her.

Lady Gaga stepped deeper into her dirty 30s by cleaning up real good -- dressing to the nines and looking chic for her 31st birthday bash.

Gaga headed to dinner at Gjelina in Venice Tuesday for the star-studded event.

Elton John and Johnny Depp joined in ... even if a little underdressed compared to the bday girl.

Selena Gomez had the best time watching The Weeknd from backstage ... her face confirms it.

Abel was performing Sunday in Brazil for his Starboy tour -- and Selena's clearly enchanted watching from afar.

Casey Affleck has avoided doing 2 things since winning Best Actor at the Oscars last month -- trimming his beard, and doing A LOT of laundry.

Paps got the younger Affleck brother Saturday on his way to a laundromat in Vancouver, where he appeared to be lugging an NFL-sized football gym bag full of clothes.

Harrison Ford proved you can be a "schmuck" one day and a jet pilot another.

His wife, Calista Flockhart, and son, Liam, were passengers in the twin engine jet Harrison lifted off Saturday from Santa Monica Airport.

TMZ broke the story of a recorded conversation between Harrison and the tower at John Wayne International Airport after the actor mistakenly landed on the taxiway. Harrison informed the tower, "I'm the schmuck who landed on the taxiway."

Ashley Graham looked off the hook, especially from behind, during a photo shoot in Hollywood.

Ashley was shooting photos Thursday for her new swimsuit line.

She nailed it ... hook, line and sinker.

Sia is showing off these days ... and her face says it all!!

The singer let loose at LAX Wednesday and didn't sport her signature wig that usually covers her face ... and we gotta say, she looks pretty damn amazing.

Kesha went makeup-free at the gym in L.A. ... and sweat it out with some Pilates.

The singer sported a simple white tee Tuesday with "Bring it on Home" plastered on the front.

#NoDaysOff

Mel B's husband, Stephen Belafonte, is following her lead and still rocking his wedding ring, but it's not stopping him from chatting up a mystery woman ... who had shades of his estranged wife.

Stephen then hit the liquor store before heading to the Beverly Hills Hotel and Serafina in WeHo -- where he's an owner -- he was spotted chatting up a Mel B look-alike at dinner. She's even wearing the same shade of nail polish as MB.

The 'AGT' judge filed for divorce Monday after separating in December.

The force was not strong with the Lakers Tuesday night ... they got straight-up murdered by the Clippers -- but it all went down in front of a ton of huge stars including 'The Force Awakens' star Daisy Ridley!

The 24-year-old British actress (who played Rey in the flick) sat right on the court -- in a celeb-packed crowd that included Michael Phelps, Gucci Mane and Meghan Trainor.

Orlando Bloom's leaving us in suspense with a new cliff-hanger ... by jumping off a cliff.

Orlando's in St. Barts with Kristy Hinze and her billionaire husband James Clark -- been there since Friday, actually -- and he's getting over Katy Perry in exhilarating fashion.

Emily Ratajkowski left little to the imagination while lying out on the beach in Mexico.

Baking her buns, Emily looked like she might've opted for nude beach attire ... it's just a really tiny thong.

She's staying cool with cervezas, but that ass is in danger of a burn.

Justin Bieber took a load off ... and everyone was all smiles.

The Biebs hit up a bar in New Zealand and for some reason, decided to rip his shirt off before pounding a few back.

Bartender was all in.

Donald Trump Jr.'s son, Tristan, was taken to a hospital Sunday after breaking his leg in Aspen ... TMZ has learned.

We're told Secret Service accompanied the 5-year-old to the ER after he fractured his leg on the ski slopes.

Tristan was skiing with his family and Ivanka's family in Aspen over the weekend.

Justin Bieber was so totally unimpressed by something called "the world's most exciting jet boat ride" -- and it was written all over his face.

The Biebs had Monday off from his tour and hopped on a Shotover Jet in Queenstown, New Zealand. The high-speed boat hits 50 mph while careening and doing 360 turns. If that sounds like it'd be tons of fun ... it probably is, unless you're Justin.

Occupational hazard for a guy who drives exotic sports cars, we guess.

JB rented out the entire boat for himself and his 2 pals, so at least he was bored in private.