Jacqueline Kennedy-Onassis (Size 10)
Renee O’Connor (Size 8)
Sarah O’hare (Size 9)
Nancy O’Dell (Size 7.5)
Rosie O’Donnell (Size 9)
Sandra Oh (Size 6.5)
Ashley Olsen (Size 6)
Mary-Kate Olsen (Size 5.5)
Phina Oruche (Size 9)
Kelly Osbourne (Size 8.5)
Olive Osmond (Size 7.5)
Beth Ostrosky (Size 10)
Carre Otis (Size 10)
Catherine Oxenberg (Size 7)