Under Siege 2: Dark Territory star Katherine Heigl performed a bit of light calisthenics before embarking on a shopping expedition in Santa Monica on Tuesday morning. You see, Heigl got bit of a charlie horse the last time she went to Barney's in Beverly Hills, which left her in a surly mood for a few days afterwards. Heigl said, "That injury really knocked the wind out of my sails. I could barely walk for a few days afterwards. It was great having everybody helping me out. Joshua make daily runs over to the House Of Pies for the chocolate crème pie. It was nice, but I was bit of a pill and there's no need for a repeat performance."