Adults night out!

Behati Prinsloo celebrated her birthday with husband Adam Levine and pals, including Kate Beckinsale, at Craig's in Hollywood last night, and they couldn't wait till the end of their meal to take a smoke break. Not that we're judging, but now that they have a kid, they should really think about putting down the cancer sticks.

The supermodel and the rocker welcomed daughter Dusty Rose in September, so they probably don't get to get out and cut loose very often these days.

The Voice coach shared a sweet message for his wife on Instagram to mark her big day. "Happy birthday to the baddest b**ch on planet earth. baddest mom…baddest wife…baddest bad ass…My Queen,” he wrote. Aww!

The Maroon 5 frontman used to be the most notorious ladies man in town, but the South African stunner tamed his womanizing ways. He must be head over heels for her!