Katie Holmes just proved to Us that a denim button-down shirt is one closet staple that will truly never go out of style. Her take on the piece is easy, comfy and unfailingly versatile. It's a layer that always just works - and we found a stylish lookalike that's just $29. On July 22, the actress was just spotted in New York City looking effortlessly cool in an outfit that served more "off-duty actress" than "movie-set look." While filming her new movie Happy Hours, Holmes wore a relaxed button-down with baggy trousers, ballet flats, a slouchy handbag, and a floral blouse.