Derek Hough & Amy Purdy's Biggest 'DWTS' Challenge?

Derek Hough & Amy Purdy's Biggest 'DWTS' Challenge?

Derek Hough and Amy Purdy chat with Access’ Shaun Robinson after performing on the Season 18 premiere of “Dancing with the Stars.” What do they think will be their most challenging dance routine? And, has Amy actually had any time to celebrate her bronze medal for snowboardcross at the 2014 Paralympics?