So many spring formals and evening weddings to come, so few dresses to wear… What’s a girl to do? Look to the stars, of course! InStyle.com found twelve great gowns inspired by the latest celebrity red-carpet looks. Whether you’re looking for a sexy number like Amy Adams’ emerald curve-hugger or more of a classic gown like Katherine Heigl’s glam stunner, you’ll find a lovely lookalike perfect for your special occasion right here. Best of all, you’ll have a little cash left for shoes: Every star-like dress is under $400.