Article continues below advertisementElle Fanning revealed the surprising reason she joined the controversial subscription-based social media platform OnlyFans. At the SXSW Film & TV Festival on Thursday, March 12, the 27-year-old explained to a news outlet that joining the app helped her prepare for her role in Margo's Got Money Troubles.Article continues below advertisementWhy Did Elle Fanning Create an OnlyFans Account?Tap Here To Add Ok Magazine as A Trusted SourceSource: MEGAElle Fanning said there 'were a lot of things' she did to prepare for the role.