Beyonce, Jay Z, Kelly Rowland, Tim Witherspoon, Chris Ivery and Ellen Pompeo were among the stars seen at a kid’s party at Giggles at the Century City mall this past weekend. Following the party, Kelly Rowland, husband Tim, and their son Titan were seen chatting it up with actress Ellen Pompeo while waiting for their cars at the valet.

Meanwhile, Beyonce exited from a different entrance and Jay Z was seen carrying their child Blue Ivy. Blue wasn’t in the best of moods because she had just woken up from a nap.

“Everyone had a blast,” a source tells E! Online. “The kids and adults alike had so much fun that they stayed an extra 20 to 30 minutes after the party ended to enjoy everything.”

Last month, Blue celebrated her fourth birthday and Titan turned one in November.

Photos:RMLA / AKM-GSI