Christina Aguilera doesn't want to be in Britney Spears' book: Put the genie back in the bottle

Britney Spears and Christina Aguilera (pic) have been constantly pitted against one another during their careers. Photo: TNS

Christina Aguilera doesn't want to be in Britney Spears' upcoming memoir. But she's worried she might be.

The pop star — who broke out alongside Spears on The Mickey Mouse Club and during the late 1990s teen-pop boom — voiced her trepidation at the end of her Monday Jimmy Kimmel Live! interview, when the host asked Aguilera if Spears had reached out to her about being mentioned in The Woman In Me.