"My nickname from my mother when I was growing up was Gizmo - from Gremlins, and I still get called by a lot of people, 'Giz' (or) 'Gizzie'... I was sweet but can bite (sic)... I used to pretend to kiss my mother and then bite her chin and it used to make her laugh." Sienna Miller on her odd childhood nickname, which has stuck with her.