Beyonce’s semi-surprise cameo on Lip Sync Battle has set the bar pretty high for future performers, but Hayden Panettiere is apparently up for the challenge.
Before a 16-year-old was crowned King of The Voice on last night's Season 8 finale, the show's enduring pop queen quietly fired shots at some competing Top 40 royalty.
Christina Aguilera lends her great big voice to the Great White Way in a somber but moving cover of "Anywhere But Here," from the Broadway musical Finding Neverland.
Find out who Madonna would've rather kissed at the MTV Video Music Awards, plus 10 more little-known tidbits of Christina Aguilera trivia in the latest episode of our video series, Think You Know Pop?