Hot Vegas

The Gwen Stefani-collaborator and recent "American Idol" guest star played the pool at the Hard Rock over the weekend, and there were plenty of chicks on that jock, as he headlined a concert to welcome back the Rehab pool party. The only thing that needed rehabbing after this show was, as far as our friends at SpyOnVegas.com could tell, were Akon's drawers.

Arriving around midnight on Saturday, the no longer big O posed for photos with fans and the Pussycat Dolls -- the Vegas burlesque branch, not the "singing" group! Jack then retreated to the club's VIP area with "American Idol" wannabeen Justin Guarini.

His entourage chilled in the VIP room, sipping Grey Goose and Dom, while JET hosted a Kim K look-alike contest. Sources inside the party tell TMZ that the competition was fierce, but Ray narrowed it down to one lucky lady, who won a chance to star in Ray's next, er, film.

Do you have steak, lobster, caviar? Hell to the no! You make a beeline to the Golden Arches for a #1 with a Diet Coke (natch). Lovin' it!

To support you with your Mac Attack, you also bring along your Vegas BFF, comedian Jeff Beacher.

The couple ate with a group of friends, including pharmaceutical enemy-turned-buddy Brooke Shields, in a roped-off patio area of SW Steakhouse. Tom likes his meat!

After the meal, the group walked through the casino floor, where fans stepped away from slot machines and roulette tables to swarm the duo for photos and autographs.

"Sopranos" siblings Meadow and A.J. Soprano were hanging out at PURE nightclub in Caesars Palace late Saturday night, celebrating the final season of the HBO show. The two were seated next to each other in the club's VIP lounge, laughing while engaged in close conversation.

Sigler and Iler were later joined by K-Fed and Marlon & Damon Wayans -- talk about a random crew!

The ex-Mr. Spears hung with a bevy of blondish, er, beauties, at the Bare Pool Lounge -- the Mirage's topless sunbathing paradise -- and quickly got their drink on. Um ... just who is watching those kids?!

TMZ has learned that K-Fed and his posse drank a bottle of Jack Daniels, did a round of Patron tequila shots and topped it off with some lemon drop shooters. Everything in moderation! We're told the Fed-Ex party train was the last group to leave the poolside romp, and planned to return for more fun in the sun this weekend! How does he find the time?!

Unlike Britney, if K-Fed has a meltdown, he's already got the shaved head part down!

Federlust was snapped in TAO Las Vegas' VIP lounge last night, while moving on a pneumatically-powered, glittery-lidded fembot, with whom, we're told, he danced for 20 minutes. We're not sure whether the moment captured here was before, during or after bootyshaking, but whatever K-Fed's sayin', she ain't havin' none of it.

The Weasel was surrounded by a group of scantily clad, curvy women, as he attemped to get the crowd pumped for the party. Dropping f-bombs left and right and exclaiming "I love penises," it's fair to say Shore did a fair but random job.

Shore added some fuel to the Paris vs. Kim fire, asking Princess Dash who her favorite artist was, adding, "Don't say f**king Paris Hilton, cuz we know that's not your f**king favorite artist!"

A freshly-shaven Federline hit up Jet Nightclub at The Mirage Friday night to mark his divorce with a party, where lingerie-clad dancers showered the crowd in fake $50 bills. Seems his divorce settlement with Brit didn't leave him wealthy enough to throw out the real thing!

Ironically, a source inside the club tells TMZ that while plenty of hotties tried to flirt their way into the VIP lounge, Federline and his entourage were only letting in "Britney look-alikes." Federline was also spotted earlier that day lounging around Bare, the topless pool at The Mirage.

Leonardo and Britney Spears made separate, but equally notable splashes in Sin City this weekend, with Leo showing up for JET Nightclub's first anniversary party with girlfriend Bar Refaeli and her dad, while Britney had dinner -- and a soft drink -- at TAO.

DiCaprio, perhaps returning the favor for Bar's taking him home to meet the folks in Israel last month, brought the lady and her pops to JET's birthday bash, partying with "Blood Diamond" co-star Djimon Hounsou, and pals Luke Wilson, Woody Harrelson and Kevin Connolly.

AM took up his usual spot at PURE nightclub in Las Vegas on Saturday night, but this time he had pal Travis Barker by his side for an incredible birthday set. Neil Patrick Harris looked on as AM spun the tracks, while Barker rocked the drums live -- with a cigarette in his mouth! Now, that is rock 'n roll.

The Caesars Palace club, where AM spins every Friday, even gave him a cake shaped like a turntable -- which actually turned! You won't find that at Baskin-Robbins.

Katie lived large at the Bare Pool and Lounge at the Mirage in Las Vegas over the weekend, though in typical Rees fashion, she flaunted the rules of the hotspot -- by leaving her top on. (Bare is a topless pool, and by "topless," we don't mean "open-air.")

Elsewhere, she played a few hands -- of poker -- at the JET Nightclub Celebrity Poker Tournament, and was spotted with Vegas high-roller George Maloof, an owner of the Palms. And she ended her night at JET's one-year anniversary party, sipping Grey Goose.

TMZ has learned that Prince's 3121 club will live on in Las Vegas for one month longer than he orginally planned.

Tickets had been available only through March 31, but Prince has now extended his stay through April at the Rio Hotel in Sin City. Tix go on sale at some point today, our source says, the first 250 priced at $125 -- after that, they'll be $175! Ouch!

Prince has been playing Fridays and Saturdays in the former Club Rio since November.

Catholic League president Bill Donohue, who once took on the creators of "South Park," is now crusading against the off-Broadway hit show, "Stairway to Hell," produced by Vegas impresarios Jeff Beacher and Randy Weiner. The rock musical involves rockers and a heaven/hell theme.

Donohue lamented in a press release, "Men and women are dying everyday in Iraq to keep America free. It is sickening to note that some young Americans think freedom means the right to insult, degrade and abuse the sensibilities of Christians." Donohue neglected to mention whether he thought free speech was part of that fight.

"Hell" producer Randy Weiner fired back, "We're not interested in hurting anyone or disparaging anyone's religious beliefs. This is a show meant to amuse and entertain, and our sole intent is for the audience to leave our show feeling that they enjoyed themselves during the time they spent with us. It saddens me that Mr. Donohue is trying to exploit the suffering of our American soldiers to further his own crusade."