(Cover) - EN Showbiz - Mila Kunis has admitted she had a butt double in upcoming movie Friends with Benefits.

The 27-year-old actress said she was not ready to show her own behind and so participated in the audition process for the model that had a posterior most like her own.

In an interview with Ryan Seacrest, the star explained how the process worked.

"These young ladies came in and they were in a casting room, the director and the casting director and my make-up artists and these lovely women had to show us their derrire," she shared.

"And we chose the one that resembled my body the most without looking like it is fake."

Mila said she did not want to show any more than she absolutely had to. The stunning star tried to reveal herself in small measures.

"I showed side boob and I figured I can't just give everything all away at once," Mila laughed. "I gotta let it all out in little pieces here and there."

Mila also shared that her guilty pleasure in life was watching reality television shows. (C) Cover Media