On Saturday, Billie Eilish celebrated her 21st birthday in ... velvet corset and waist-snatching black belt with white faux fur trim and matching gloves, along with sultry smokey eye makeup ...

From her signature grunge aesthetic to her glam awards show looks, Billie Eilish is ... clear visor hat with plaid trim. In an olive-green, silky set from Gucci, Eilish accepted two awards ...