Britney Spears, Christina Aguilera, Justin Bieber - One of our favorite acoustic performances EVER -

Christina Aguilera - Happy Pride from special guest Christina Aguilera!!!

Christina Aguilera - #FeelThisMoment #BMA filmed from the audience without the backing vocals!

Christina Aguilera, Pitbull - @guada_argoitia te dije que era el mismo ritmo, mira hasta en final, q

Christina Aguilera, Pitbull - [Watch] Pitbull feat. Slimtina Aguilera - “Feel This Moment” at #BBMA

Cee lo, Christina Aguilera - We love our Voice family! Christina Aguilera and CeeLo Green will coach
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Cee lo, Christina Aguilera - We love our Voice family! Christina Aguilera and CeeLo Green will coach

Christina Aguilera - RT Christina Aguilera - Back to Being Hot!:

Christina Aguilera - Back to Bein

Christina Aguilera, Pitbull - nice (@YouTube

Christina Aguilera - I added a video to a @YouTube playlist NOVITA

Christina Aguilera - RT Christina Aguilera — Weight Loss Since ‘The Voice’:

Christina Aguilera —

Christina Aguilera - Christina Aguilera talks vacation new music during The Voice Screening:

Christina Aguilera - Christina Aguilera - The Voice S4: