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!