Latest 50++ Lily James Mamma Mia Premiere Hair. Lily james arrived at the mamma mia 2: Here we go again world premiere in london this evening. The actresses caught the eye on the blue cher wore her hair big and an all black outfit for the mamma mia world premiere tonightcredit: Dressed in a dipped hemline ballgown and stiletto heels, lily appeared happy and relaxed as she posed with fellow castmates, including amanda seyfried.