Aimee Osbourne is the 'other' daughter of Ozzy and Sharon Osbourne, and the older sister of Jack and Kelly. You haven't seen her on the family's MTV reality show The Osbournes because it isn't her thing.
The 25 year old is an English singer, actress and is currently a columnist for the pop culture magazine Nylon. She has also appeared in several magazine layouts and fashion shows, including the Mercedes-Benz LA Fashion Week.
She was photographed last night at Chateau Marmont in Beverly Hills. Also in some of the photos were little sister Kelly Osbourne and her model fiance Luke Worrell.
Sister Kelly O has lost over 40 pounds - check out her before and after photos here.
Check out photos, a rare 20/20 interview with Barbara Walters, and recent footage of the family below.