The Hilton sisters are single and loving it!

Paris and Nicky hit up Trousdale in West Hollywood with their cousins and friends for some late-night fun ... and to catch DJ Ryan Best spin for the night.

Hilton Tweeted, "@DJMRBEST killed it at Trousdale last night! So much fun, I could not stop dancing! Love you Ryan! :)"

The girls then moved on to The Beverly Club. Sources inside tell us:

"Paris and Nicky were dancing like crazy to Foster the People's "Pumped Up Kicks." At one point, guys were lined up to talk to the sisters, but the girls ignored them and kept on having their girls' night out."

Nothing like getting the VIP treatment all the way. We wouldn't expect anything else from Princess P and her sis!

Paris, wearing a sexy black LBD, answered a call on the way out while Nicky followed behind in black leather pants. Both girls were rocking their wickedly hot Louboutins. So chic.

These two are looking so fine that we don't think they'll be single for much longer!

Will Smith is working on his comeback to music, reports XXL magazine.

Smith, who is currently filming the third Men in Black movie, hasn't released an album since 2005.

Producer La Mar "Mars" Edwards told the mag during an interview, "We're working on Will Smith, bringing him back. That's actually him on the other line right now."

Smith enjoyed hits in the late '90s and early '00s including "Miami" and "Gettin' Jiggy Wit It." As of late, his daughter Willow has been the musical member of the family with her hit "Whip My Hair."

Christina Aguilera dressed for comfort on a flight from Paris to LA -- we caught up with her as she landed at LAX on Saturday.

Christina, 30, was with her new guy, Matt Ruttler, 26. The two have been dating for about eight months now, and both pulled their hats down low so as not to be noticed.

Wait -- which John is it??

John Mayer seemed to be taking a page out of Johnny Depp's style guide as he went to dinner at Katsuya in Brentwood on Saturday night. Either that, or he's been watching a lot of Indiana Jones lately.

All he needs is either a snazzy mustache or a whip to complete his look of choice.

Megan Fox has a small role in Judd Apatow's next movie, This Is 40, but apparently she's making a big impression!

She posted this photo from set to her Facebook page, with the message, "On set of THIS IS 40 with Jason and Chris...Two very handsome, very tall, VERY funny men."

The men are Jason Segel (right) and Chris O'Dowd (of Bridesmaids fame.)

Fox, 25, also has another comedy in the works -- The Dictator. No word on if that includes pool time, too ...

Jennifer Lopez soared on set of her new music video for the single "Papi"!

The song lyrics include, "put your hands up in the air," and J. Lo did just that as she got flipped around while filming in Hollywood on Saturday. Even in the middle of a divorce from hubby Marc Anthony, she puts on a smile! Good for you, Jen!

So You Can Dance choreography duo the Nappytabs were on set, and J. Lo Tweeted on Sunday, "yesterday got a 'lil hectic," with a pic of a car on fire from set! See it after the jump ...

Model/actress Estella Warren has escaped jail time over the DUI she was charged with when she crashed her Prius in May.

In a statement, she said:

“I take my actions and their consequences very seriously. I can’t express enough how grateful I am that no one was injured or hurt. Moving forward I am focusing all my efforts on my career, my family and being a good influence to others."

Warren, 32, plead guilty to DUI charges in return for probation and paid a little more than $1,000 in fines. She will also take court-ordered alcohol classes.

It's millionaire meets metal: mogul Donald Trump and rocker Bret Michaels are developing a reality show together, according to The New York Post.

The two became close while filming Celebrity Apprentice, which Michaels won.

The new show, called Something To Believe In, would feature Michaels traveling the country and helping people. A rep for Trump told The Post: "Mr. Trump thinks Bret is a wonderful guy. [He] wants to consider it."