8 XXX : celebsnaked

I believe that you are implying it could be a body double? But it's from the movie Oldboy, and there are multiple scenes of her body. The belly button, areola, and other physical characteristics align with her full body nude scenes. So yes we do know that's her.
source?
Nice body but how do we know it's Elizabeth Olsen? We don't see her face or anything else like tattoos, piercings, or body marks to show who she is. She could be anyone.

this clip on clipf.com