The two singers star alongside each other in new movie 'Burlesque' and Christina - who has filed for divorce from husband Jordan Bratman since filming finished - revealed Cher gave her plenty of advice on a range of topics, including love.
She said: "We were bonding almost in a maternal way on camera but behind the scenes we were like old, chatty girlfriends that could not stop talking. They actually had to drag us to set a few times because we were late just talking, talking about love and relationships in life on a personal level. So, it was a girlfriend moment and a mother-daughter moment on screen.
"One thing that she said that was really, really funny that's her own quote is 'You know, honey, husbands come and go but I'm still Cher at the end of the day'."
Christina, 29, also revealed she was nervous to shoot her love scenes with co-star Cam Gigandet in the film.
She added: "There can be awkward moments with that. But me and Cam have a very funny, playful, teasing sort of relationship with each other that we can kind of have a laugh about it and get lost in the moment. Plus, it's very unsexy when there's a zillion people looking at you."
'Burlesque' is released worldwide at the end of November.
