Christina Aguilera posed in polka dots at the 2011 NBC Upfronts on Monday. Upfront week gives networks a chance to introduce their fall primetime lineup to advertisers, and Xtina was there representing the new NBC reality competition show "The Voice." Jamie McCarthy/WireImage.com - May 16, 2011
TV Stars Strut Their Stuff
Tina Fey, Christina Aguilera, Joshua Jackson, and others hit promote their fall TV shows in NYC.