Gladiators: It seems like only yesterday Carrie Bradshaw donned a pair of gladiators on her wedding day. Actually, that was 2008, but the "contender" craze is back with a vengeance. Whether you prefer flats or a heel, at the ankle or up to the knee, these three pairs will inspire you to lace up before you step out. Ivanka Trump Mackley Caged High-Heel Leather Booties, $90; lordandtaylor.com Circus by Sam Edelman Badger Knee-High Gladiator Sandals, $100; lordandtaylor.com Cole Haan Mercer Sandals, $128; lordandtaylor.com White Sneakers: Let's face it: Comfortable footwear will always be on trend. But this season, nothing feels so fresh and so clean as a pair of white-as-snow sneaks. (We're talking high top, low top, and everything in between.) Plus, there's no need to relegate them to the tennis court; wear slip-ons with a sundress or stomp around town in printed trousers paired with white kicks. Dolce Vita Oriel Lace-Up Sneakers, $36; lordandtaylor.com Dolce Vita Jinsy Platform Slip-On Sneakers, $38; lordandtaylor.com Superga Cotu Cotton Hi-Top Sneakers, $85; lordandtaylor.com