Gigi and Bella Hadid
Who they are: The duo rose together in the fashion world by dominating one Vogue cover after the next and tackling runway shows around the world. Gigi has landed lucrative deals with brands such as Reebok, Maybelline, and Tommy Hilfiger while Bella's added Nike, Bulgari, and Fendi to her list of accomplishments. They're each successful in their own right, but some of the best moments come when they walk the runways together — like they did at the 2016 Victoria's Secret Fashion Show.
Work aside, both Gigi and Bella are street style superstars. They often set the trends for what everyone else will be wearing and the sisters also, on occasion, borrow each other's clothes. The two coordinated in bright outerwear while out and about in Paris.