Katherine Heigl and her co-star T.R. Knight spent the day hitting the new Americana Mall in Glendale, CA yesterday. Katherine was looking sexy in a tight little dress with a short skirt and some sexy boots. T.R. was working the required t-shirt, jeans, and sneakers which is apparently all he owns. Heigl is rumored to have pissed off the writers over at Grey’s so much they plan to give her a brain tumor and make her wonder if they will kill her off al season. Beats the plot line with Meredith drowning and coming back to life – crap!