'The Summer I Turned Pretty': Go Behind the Scenes of That Epic Miley Cyrus Dance Break!

Go behind the scenes of the epic Miley Cyrus dance break on 'The Summer I Turned Pretty,' with stars Sean Kaufman and Rain Spencer. Series creator Jenny Han shared footage of the actors rehearsing for the routine set to one of Miley Cyrus' first hits, 'Party in the U.S.A.'