Christina Aguilera weight loss wows at Prince tribute: 'The Voice' coach credits Reiki

Singer Christina Aguilera is set to appear in the upcoming Prince tribute, and it looks like the Princess of Pop has maintained her fabulous weight loss from a few years ago. Aguilera, a coach on "The Voice" shocked audiences with her extreme body makeover. "Xtina" has been listed as one of Time magazine's top 100 most influential people, so when she talks weight loss secrets, people listen. The trick to Aguilera's success might surprise you.  Christina Aguilera weight loss wows at Prince tribute: 'The Voice' coach credits Reiki