Kevin Mazur/Getty Images for Critics Choice Association Award season is just getting started, but Billie Eilish is ... skirt an oversize black blazer and a light blue Peter Pan collar shirt ...

Billie Eilish has described her classic green-and-black hairstyle as her most "personal and career-defining look". The Bad Guy hitmaker has experimented with various hairstyles and colour combinations ...

Eilish, who took home an award for 'What Was I Made For?', wore a scholarly Willy Chavarria with a tie she received for her birthday Billie ... black blazer and a light blue Peter Pan collar ...