Legendary tough guy Sean Penn had a rare night out on the town in Beverly Hills on Saturday night. The Oscar winner stepped out at trendy new eatery Hakkasan -- and even crossed path with Paris Hilton while out and about!

A bevy of celebs have been hitting the brand-new glitzy Cantonese fusion restaurant including, Ciara, Lily Collins, Rita Ora, Kevin Hart, Tara Reid, Jared Leto, Cassie, Diddy, Kim Kardashian and Kanye West.

Despite Hakkasan being the new "it" stop for the elite, the devil-may-care actor certainly didn't dress up for the swanky spot. The Gangster Squad actor was looking rugged in loose-fitting jeans, and dirty cowboy boots. We actually would have been more shocked if we saw Penn in a suit and tie!

On the very same day as Penn's Chinese food adventure, Tom Hanks gave an interview as part of BAFTA's "A Life in Pictures" series and talked about his decades-long friendship with the Mystic River actor, describing a funny Halloween they all spent together in the '90s.

"[W]e were in Washington D.C. on Halloween," Hanks said on Saturday. "And it just so happened Arnold Schwarzenegger was in town doing True Lies ... So me and my kids, Sean and Robin [Wright] and their kids and Arnold and his kids went out trick or treating together, in Georgetown. If anyone was to come out of their house to see who’s on the sidewalk, they’re going to win the celebrity lottery here. Arnold was saying to us ‘come on, hurry up, you snooze you lose, get up there with your candy.'"

We love the image of Hollywood heavyweights Schwarzenegger, Hanks and Penn knocking on doors asking for candy. What a trio!

What a little cutie!

Busy Philipps attended a house party in L.A. over the weekend, and the actress gave us our first glimpse of her baby girl Cricket, who was born on July 3.

The little one looks so much like her beautiful mama!

Big sister Birdie is loving having a sibling, according to the Cougar Town star.

"She's interested in cuddling and loving and singing. But, when I ask her, for instance, to get like a diaper cloth or a burp cloth or a diaper for me, she says, 'Mom, that's boring and I don't want to do that," she recently revealed to Us Weekly.

Motherhood truly suits her!

But where are the kiddos?! If we didn't know any better, we'd say Gwen Stefani and husband Gavin Rossdale were going on a romantic getaway without sons Zuma and Kingston!

On Sunday afternoon the pregnant No Doubt frontwoman and her hubby smiled as they arrived at Los Angeles International Airport for a flight out of town. Gavin always looks pretty good, but Gwen continues to wow us with her maternity style. From her perfectly applied trademark red lipstick to her high heeled boots, she knows how to dress to impress!

Kim Kardashian, who turns 33 today, gave her very first post-baby interview to London's Sunday Times Style and she chats about her body and fashion for both herself and baby North West.

Though Kim admitted that being slammed for her nearly 70-pound weight gain during her pregnancy "completely destroyed" her, she has a more positive and relaxed outlook about getting her body back. "I haven't exercised a whole lot so far, just because I've been busy with the baby and I don't want to leave her. I still have some [baby weight] to go," she says, adding that the Atkins Diet has helped her tremendously. "Atkins worked for me and I don't feel tempted to eat a bunch of junk food. It's just about staying healthy - it will come off."

"You want your guy to think you're really hot," Kim said of baby daddy Kanye West. "I'll put something on and he'll say, 'No, that doesn't look good', and I'll trust him." And what about how she styles her four-month-old daughter Nori? "I want to dress a little lighter colorwise," she says. "I think North looks cute in light colors, and then I want to wear light colors. North doesn't typically wear pink, though. She wears mauve or blush, not, like, typical baby pink."

And speaking of Kanye, after kicking off his Yeezus tour over the weekend in Seattle, the rapper postponed his Vancouver show (his second one), which has now been rescheduled for Halloween. Rogers Arena tweeted the news and on their website they blamed the rescheduling on "unforeseen circumstances."

Very early on Monday morning Lady Gaga released her new single "Do What U Want" featuring R. Kelly, and she also posted the R-rated album cover, which features her butt barely covered by a thong. We're not that surprised because it's Gaga, but we did find the series of Twitter messages she wrote prior to posting the song a bit shocking. She tweeted:

"LADY GAGA IS FAT NOW! LADY GAGA IS A REDUCTIVE MADONNA COPY! SHE'S OVER NOW! LADY GAGA IS A HERMAPHRODITE! LOOK AT THIS PIC OF HER D*CK LADY GAGA IS ON DRUGS! HER CAREER IS OVER! (been an addict for 10years) My recovery is a daily battle ... GOD HATES LADY GAGA! #YouCantHaveMyHeart ill always fight for equality, got my own relationship with God."

And as if that wasn't enough, Gaga then dragged Katy Perry into the mix! "APPLAUSE didn't DEBUT AT #1!" Gaga contined. "KATY IS BETTER THAN HER! #UWontUseMyMind I write for the music not the charts . . . MADONNA HATES GAGA SHES OVER … i dont need anybodys permission to be remembered. I will be."

Um ok. Thoughts on the new song? Take a listen below:

When are they NOT hawking something that makes their family infinitely wealthier?

Kim, Kourtney and Khloe Kardashian strike some sexy poses in the new ad campaign for the Kardashian Kollection's line for the U.K. brand Lipsy, and this marks Kim's first official photo shoot since giving birth to daughter North West back in June. She's almost back to her pre-baby bod!

However, the one who really caught our eye was Khloe -- not only is she showing off her noticeably trimmer figure, but she's seriously hotter than ever! Given how stressed she must be with the drama surrounding her marriage to Lamar Odom, we're not sure how this is even possible, but the best revenge is definitely looking good.

Or perhaps looking good and posting angry quotes on Instagram? On Saturday night Khloe posted a photo of the words "You get what you f*cking give" in bright red ink (hmm, cryptic much?), and little sister Kendall then re-tweeted the post. We're still not sure what's going on with Khlomar, but they're both still wearing their wedding rings...

Er, close to her boob? Either way, he's in there somewhere!

After giving birth on October 6, Jaime King and infant son James Knight went to a party with her mom Nancy, and two days before that the Hart of Dixie actress took the tiny tot to his first checkup. And not only does the former model look amazing just two weeks after welcoming her first kid into the world, but she's been quite active!

On Sunday she posted the photo below on Instagram and wrote, "Baby feet + paint = awesome arts and crafts." So cute!

On Saturday night Paris Hilton grabbed dinner with several pals at Hakkasan in West Hollywood, and after that she had a girls' night out at Warwick. "Fun night out with my beautiful girls @FarrahBritt & @BrandiHowe. #GirlsRule," she tweeted. But what about her beau River Viiperi?

In other news, Paris is so excited about Halloween, it seems like she's been stocking up on themed outfits for fall! "Rocking my @Alice_Olivia school girl outfit," she tweeted about her prepster-inspired skirt and top combo. "Obsessed with the sweaters @Alice_Olivia made this season. So chic & fun!"

Halloween is less than two weeks away, so we're dying to know what the heiress is going to be this year. The other day she Instagrammed a montage of several different Disney princess costumes (sexy ones, natch), so it looks like she's got some ideas...