From preppy polo matches to dance-floor drama, we saw some amazing looks this week! Prince Harry on a pony takes on pink-suited Harry Styles. Cara Delevingne and Amber Rose go head-to-head for the best blond buzz, and svelte “Dancing With the Stars” judge Julianne Hough gets challenged by sports superstar Simone Biles. Yahoo Style’s Joe Zee pairs up his favorite looks from the week and makes them go head-to-head, but who will be crowned the winner? Find out in this edition of Knockout Style.