Christina Aguilera in a promo shoot for \"The Voice\" She\'s been widely criticized for her fluctuating weight recently, but in a new promotional shot for season three of \"The Voice\" Christina Aguilera appears slim and stunning. Many are questioning if the photos were Photoshopped.  
The singer wore a clingy black and white optical illusion dress, she also donned a knuckleduster that spells her moniker Xtina, while her fingernails were stained with black polish.
Christina will reportedly perform her new song \"Your Body,\" on The Voice when it returns in September which is the show\'s first season to premiere in the Autumn.
Earlier this week Aguilera tweeted that she\'s excited about her upcoming album, which is reportedly due out before the end of the year.