Originally posted 05/11/2012 06:20PM
What's a newly single star to do in New York City? Step out on the town with her girlfriends, of course!
, who recently split
with longtime beau Nick Loeb, did just that alongside Jessica Alba
and sisters Samantha Ronson and Charlotte Ronson on Thursday.
The celebrity clique partied the night away at the Dream Downtown Hotel's PH-D Rooftop Lounge, arriving around 1 a.m.
The ladies "were all enjoying themselves and taking lots pictures of each other," says an onlooker. "Sofia was relaxed and was all about having fun."