The 23-year-old actress is wearing a Wes Gordon top, Jenny Kao shorts, and Christian Louboutin shoes.
Riley was joined at the premiere by festival founder Robert De Niro (with wife Grace Hightower), Liza Minnelli, Josh Lucas (with wife Jessica), Mira Sorvino (with husband Christopher Backus), Ari Graynor, Josh Radnor, and director Paul Haggis.
The film is a documentary about the band The National going on one of the biggest tours of their career and the lead singer bringing along his younger brother to help out on the road.
25+ pictures inside of Riley Keough and others at the Mistaken for Strangers premiere… More Here! »