Christina Aguilera does not know any songs of Lady Gaga

Christina Aguilera nailed Ellen DeGeneres' celebrity impersonations...until it was time to do Lady Gaga.

• 2016-05-24T00:35:05+00:00
• Duration: 00:59

• LadyGaga
• ChristinaAguilera
• TheEllenShow
• Ellen
• EllenDegeneres

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