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"Teen Mom 2" star Kailyn Lowry took her brand new doctor sculpted butt out for a spin, and her first order of biz was scarfing down some greasy fries and frozen cocktails.

Fresh out of a recovery room -- Kailyn hit up Columbus Restaurant in Miami Beach. She must be feeling confident about diet choices after Dr. Miami shifted her fat cells around to give her a Brazilian butt lift.

Hmm ... this is definitely one way to enhance her surgical enhancements.

#GymsAreOverrated

Scott Disick and Tyga had a lot in common Monday ... they were both under fire by hot chicks with big butts.

Scott and Tyga were filming Khloe Kardashian's TV show when they took a break and commiserated.

As we reported, Tyga's baby mama, Blac Chyna, has been hanging with Rob Kardashian which we're told has royally pissed off Kylie and company.

As for Scott, Blac Chyna's BFF, Amber Rose, was hanging with Scott in Vegas over the weekend and started following him on Instagram ... not particularly pleasing to Kourtney Kardashian.

Jessica Simpson's 3-year-old daughter Maxwell is an apple that never fell from the tree.

Jessica clearly enjoyed her daughter's personality -- she cracked up when her mini-me stopped for photogs as they left Sagebrush Cantina in Calabasas.

Maxwell panned for the cameras and did her best runway pose. As they say in Hollywood ... the kid stays in the picture.

Harry Styles and Kendall Jenner took a big step Saturday night, giving each an intro to the other's parent.

Harry and Kendall were at the Troubador in WeHo, along with Harry's stepdad Robin and the more-famous Kris Jenner.

Baby steps ... sometimes they eventually make babies.

Zac Efron could actually make the "Baywatch" remake work, even if the script sucks.

Zac was taking swimming lessons Thursday to sharpen his skills for the role.

Verdict -- he's plenty sharp already.

Tyga's found himself a fine, fine Kylie Jenner substitute.

Hard to ignore it ... the chick he was with in West Hollywood on Thursday really looks like she could be Kylie's body double. Of course, the question ... is she a Kylie-authorized stand-in or is Tyga staffing up on his own?

She could be a potential singer for his label -- like that 14-year-old girl. If so, at least he's not texting this one. Best to keep it in the open.

As we first reported, KJ and Tyga are giving each other "more space" after their mini-split.

Everyone defines "space" differently.

Celine Dion needed all the support Thursday as she left her late husband Rene Angelil's public wake.

Celine was guided out of the Notre-Dame Basilica in Montreal by her son Rene-Charles and another family member after thousands came to pay their respects.

The funeral is today.

Angelil died last week after a long battle with cancer.

Rolling Stones' Mick Jagger and Ronnie Wood got all Brazilian with their MUCH younger chicks, but we ain't talking thongs -- we're talking meat. Tons of meat.

The Stones hit up the carnivore mecca on Wednesday night ... Brazilian steakhouse Fogo de Chao in Bev Hills ... where it's a guarantee you'll leave FULL.

Odd dinner spot for Mick -- who brought his 20-something ballerina GF ... but perfect for Ronnie and his pregnant 37-year-old wife, Sally. Cravings, man.

Beef. It's not just for Mick and Keith Richards anymore.

Connor Cruise -- an up-and-coming DJ -- may not be like his dad, but he sure doesn't mind dressing like him.

Connor and papa Tom Cruise hung out on the set of "Jack Reacher: Never Go Back" in New Orleans.

'Bachelor' contestant Lauren Bushnell still has a ways to go to the final rose, but she's a total winner in a bikini.

Lauren B. hit the beach in Cabo San Lucas with her family.

There are still 17 ladies left in the 'Bachelor' house this season -- and Lauren, a flight attendant, is definitely a frontrunner ... with fans, anyway. There are even rumors she won the whole thing.

Lauren's next one-on-one date with Ben H. better require a bikini! For her, not him.

Gigi Hadid has clearly fallen hard for Zayn Malik because he's got prime real estate on her phone after only 2 months of dating.

Zayn's head popped up on Gigi's lock screen as she arrived at Charles de Gaulle Airport in Paris.

She's in Paris for fashion week but her head's clearly elsewhere.

Taylor Swift and BFF Selena Gomez looked super hot sans makeup after their workout Monday in West Hollywood.

The squad members hit up Body By Simone, where dance is heavily incorporated into the exercise.

Envious much?

Miley Cyrus and Liam Hemsworth's renewed relationship is moving QUICKLY, as in ... they've already moved in together.

Miley and some friends drove a U-Haul truck over to Liam's pad in Malibu, where she unloaded junk from her trunk this weekend. It was the finale of her week-long moving process ... according to our Miley sources.

As we reported ... she's already wearing the engagement ring again, which Liam gave her years ago.

Miley Cyrus dropped a clue things are not only back on with former fiance Liam Hemsworth ... they might be eyeing the altar.

Miley arrived at JFK Sunday wearing what looks very much like the engagement ring she got from Liam back in the day.

The two split in 2013, but they've been hanging out lately and it looks like it's back on ... possibly in a big way.

Jonah Hill had someone watching over him during a stroll in New York City.

Khloe Kardashian flashed her hot pink, deeep V as she stepped out in NYC.

Settle down, the V of which we speak is merely the extremely plunging front of the ridiculously hot dress she wore to "Live! with Kelly and Michael."

She's definitely stepped up her style game during her NY promo tour -- but consider this: Khloe told Howard Stern she plans to get a boob job in the future. Now imagine the pink dress, post surgery.

Ummm ... get this chick to Bev Hills, STAT!