Christine Shevchenko and Devon Teuscher have spent practically half their lives with each other. Both dancers joined American Ballet Theatre's Studio Company in 2006. The following year, they graduated into the main troupe as apprentices, again together. They've sat next to each other in every dressing room they've ever occupied, and shared hotel rooms on the road. And in September 2017, at the age of 28, they became the company's two youngest female principal dancers—on the same day. If they weren't such good friends, they would probably be sick of each other.