Christina Aguilera has had a career-long rivalry with Britney Spears. But fans of the pair will not appreciate this latest battle.
Aguilera's attempt to apparently beat Britney backfired in spectacular style on the US version of The Voice.
She tried to look glamourous by squeezing into a Britney-style fishnet corset.
But her performance, but it won her no fans.
Breath in: Christina performs on the show