One trick I often see celebs and stylistas employ to turn even the most casual of looks into something fashion-forward is to add leather pants. It doesn't matter whether you're wearing a sweatshirt or button-down on top, heels or sneakers, just add leather pants (or faux) and the outfit instantly goes from blah to bangin'. Here, Gwyneth Paltrow uses this technique (or maybe she invented it) and you can, too, using the affordable finds we've rounded up below! Too warm outside for pants? Try a pair of faux leather shorts or a skirt instead.