06/09/2011 10:48 BST | Updated 06/11/2011 10:12 GMT

Blake Lively, Amanda Seyfried And Brooklyn Decker At The US Open

Not since William and Kate graced Wimbledon has tennis been so glam. Not one, not two, but three Hollywood starlets hit the US Open yesterday, with Blake Lively, Amanda Seyfried and Brooklyn Decker taking in a spot of sporting action.

Blake took a break from filming the new series of Gossip Girl to watch Serena Williams play Ana Ivanovic of Serbia, during day eight of the American tournament. The actress was looking happy and relaxed with untamed blonde locks and a big smile. (Well if we were dating Leonardo DiCaprio, we'd be sporting quite a large grin, too.)