Glam at Every Age

UPDATED 03/14/2011 at 01:00 AM EDT • Originally published 03/14/2011 at 01:00 AM EDT

AGE 14

HAILEE STEINFELD

in Marchesa

The Best Supporting Actress nominee-who helped design her one-of-a-kind dress!-was inspired by ballerinas.

AGE 27

MILA KUNIS

in Elie Saab Haute Couture

"The lavender dress was her first choice," says her makeup artist Tracey Levy. "It was bold but classic."

AGE 31

CLAIRE DANES

in Calvin Klein Collection

The actress party-hopped alongside husband Hugh Dancy in a sophisticated low-cut dress.

AGE 52

ANNETTE BENING

in Naeem Khan

The four-time nominee showed the starlets how it's done: She was the last celeb standing at the Governors Ball.

AGE 65

HELEN MIRREN

in Vivienne Westwood

The red carpet vet got dressed in an hour and a half. Her usual prep time? "Twenty minutes." Don't brag, Helen.