Up To Date 16+ Lily James Mamma Mia Premiere Hair. ahhh i loved making this videooo! Dressed in a dipped hemline ballgown and stiletto heels, lily appeared happy and relaxed as she posed with fellow castmates, including amanda seyfried. 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: But i think you can still be a fan or her's, i still am too despite all of this, because cinderella, mamma mia: