Michael Sam blew the judges away last night ... at least his ass did ... because the wannabe NFL star's booty was the talk of the ballroom on last night's "Dancing with the Stars."

The dancing was fine. His footwork was sloppy ... but after Sam cut a rug to "Uptown Funk," judges Bruno and Len couldn't stop talking about the junk in Sam's trunk.

Bruno -- "That butt was a work of art. Michelangelo's 'David' has nothing on you."

Len -- "You could win 'Rear of the Year' and I could win 'Ass of the Past.'

Here's Hilary Duff ... showing off what Mike Comrie will be missing out on now that she's decided to pull the plug on her marriage to the former hockey star.

Duff posted the pic to her Instagram account ... with the caption, "Hey #moms #westillgotit ❤️ #loveyourbod."

Duff and Comrie separated in January 2013 ... but she finally filed for divorce back in February.

First Lady Michelle Obama has been indoctrinated into a cult -- the one where you have to wear yoga pants and sweat all over a stationary bicycle.

Yes ... we got video proof of Mrs. O's commitment to SoulCycle ... as she left a spin class Sunday. Our photog spotted her leaving the Georgetown area location in a hoodie with a few Secret Service members in tow.

One of the bodyguards was sporting a gym outfit that makes it seem like she drew the short straw ... and had to spin through her shift with the First Lady.

Michelle is ALL IN -- she's even sporting SC gear ... and she's been a regular at the D.C. location since it opened last summer. Her fellow worshipers have noticed.

With Season 20 of "DWTS" upon us, get swept off your feet with the 18 sexiest shirtless photos Val's teased on social media!

It's 48 degrees and cloudy in Detroit ... so Matt Stafford's future wife hit Vegas for her bachelorette party -- and proved her ass can hang with the best of 'em!!!

Kelly Hall and her gal pals hit the pool party at Wet Republic at the MGM Grand ... where she did some bikini crowdsurfing ... bikini cheerleading ... and other bikini-clad activities -- under the 85 degree Vegas sun.

The Detroit Lions quarterback and his college sweetheart got engaged last year ... and they famously broke the news at a Cold Stone Creamery.

Now, the wedding is right around the corner -- hopefully, the reception will be half as much fun a the bachelorette party!!

Kellan Lutz celebrated his 30th birthday Saturday night with a flair ... at Dan Bilzerian's Hollywood Hills pad.

There were hot naked chicks and dudes wearing very little, per the invitation, which says, "The pool is heated to 95 degrees, and the Jacuzzi is on! We bought 150 white towels, and encourage everyone to bring a bathing suit (white bathing suit preferred)."

Everything was white. The invite makes it clear it's "an all white party. You will not get in if you are not wearing all white."

Looking like she just walked off set from a Tim Burton movie, Victoria Beckham walked the red carpet Thursday night with hubby David at the Alexander McQueen: Savage Beauty Fashion Gala in London.

Coco is now slanging lingerie ... and she's wearing the barely there bodywear in a new twerk video to prove it's the go-to underwear for strippers nationwide.

Ice T's wife is now the face of Cocolicious Lingerie -- launching at the end of the month -- and dropped this slo-mo video of her ass jiggling to show off her thong's bounceability.

Verifiably inaccurate.

Paris Hilton was leaving The Nice Guy in L.A. Wednesday night when our photog complimented her on her performance the other night at a bachelorette party in Las Vegas, where she faked an orgasm.

In an entirely separate encounter, we asked Kathy Hilton if she happened to see the video ... and it was AWK-ward.

Lindsay Lohan is as good at Photoshop as she is community service -- not very.

LiLo posted a photo of herself striking an awkward pose, standing in front of a door. If you look closely ... you can see she altered the pic around the ass area, presumably to make it look more robust.

Lindsay captions the pic with an admission ... she cropped out her dogs because she didn't like the way they looked.

If this is how Carl's Jr. babe Charlotte McKinney plans to rehearse for her upcoming gig on "Dancing With the Stars" -- there's at least a chance we might be interested in that show again.

Hint for the 'DWTS' wardrobe department -- save the bikinis for Charlotte, and keep them away from Redfoo ... at all costs.

Of course, it's easier (and hotter) to just watch her burger spot instead.

Jennifer Lopez slithered into a tight, formfitting red dress Tuesday and showed off her killer body as she made her way in to tape an episode of "Jimmy Kimmel Live!"

Every week, she hits your TV as the filthy Rosita Espinosa, all grimy from surviving the zombie apocalypse. But in real life, Christian gets dirty in a totally different kind of way.

Check out 11 photos of the starlet sexy enough to make you rise from the dead and earn your Woman Crush Wednesday honors.

Ryan Seacrest clearly has a type -- hot and blonde -- but his new girl is different in one big way ... she has a bambino.

The "American Idol" host was spotted out this weekend in NYC with a new blonde -- Renée Hall.

Hall (who is ... shocker!!! ... a model) met Seacrest, fresh off his breakup with model Shayna Taylor, at his 40th birthday party in Napa a few weeks ago.

We're told they met through the Marciano brothers (GUESS founders) and quickly hit it off.

Seacrest took Hall to NYC over the weekend, where they went to the Museum of Modern Art.

As for Hall's 8-year-old son, she's proud and loud, posting pics all over her Instagram page.

Ryan would be a cool stepdad, right?

Soooo ... Rob Ryan's son is a male model. And he has abs.

For those unfamiliar, Rob is the defensive coordinator for the New Orleans Saints ... and he's the twin brother of Buffalo Bills head coach Rex Ryan.

The Ryan brothers aren't exactly known for having shredded physiques ... but in the case of Joe Ryan, sometimes the apple does fall far from the tree.

Joe recently moved to L.A. for modeling ... and his dad came to town to visit.

In fact, we ran into the two on their way into the Lakers game at the Staples Center ... but for some reason, we just didn't connect the dots.

Taylor Swift put her famous (and possibly extremely valuable) gams on full display in Los Angeles for a shopping trip down Melrose Avenue.

According to a report, Swift and her team explored the possibility of insuring her legs against possible injury and learned they were valued at $40 million.