Gossip Girl Leighton Meester hobbles on the cobbles after slipping out of her huge yellow stiletto

Perhaps it was the bumpy ground.Or maybe Gossip Girl star Leighton Meester is still mastering the art of walking in high heels.The actress nearly came a cropper yesterday as she tottered around in a pair of yellow stilettos before losing her footing (and one of her shoes). Unsteady as she goes: Leighton Meester loses her footing in a pair of vertiginous yellow heels on the set of Gossip