08/20/2012 AT 06:00 AM EDT
Taking a night to relax to celebrate her 22nd birthday, Jennifer Lawrence
was joined by girlfriends at West Hollywood's Mercato di Vetro on Wednesday, where everyone in the group looked glam in dresses, according to an onlooker.
Sipping on chocolate cake birthday shots and rounds of martinis, "They took quite a few group photos," the observer tells PEOPLE.
On the menu for the Hunger Games
star and her gal pals was branzino, fried olives and meatballs. – Jennifer Garcia