G. Hannelius arrived at the Los Angeles premiere of “If I Stay” on Wednesday wearing a J. Crew Boys’ Ludlow Peak Lapel Tuxedo Jacket in Italian Wool ($235.00), J. Crew Boys’ Slim Ludlow Suit Pant in Italian Wool Flannel ($110.00), Steve Madden Naya Platform Pumps ($64.95), Hermes Chaine d’Ancre Enchainee Earrings ($3,525.00), and a Henri Bendel Luxe Uptown Hand Chain ($98.00).