Hailee Steinfeld, Kelsea Ballerini and Sofia Carson will get to work beep. Britney is set to receive the first-ever Icon Award at the Radio Disney Music Awards this coming Saturday (April 29). To celebrate, she'll be treated to a tribute performance by a trio of up and coming pop singers: Hailee Steinfeld, Kelsea Ballerini and Sofia Carson. Radio Disney confirmed the girls will sing a medley of Brit's hits: Since it's a kids' show, I imagine they'll stick to the bubblegum classics l