Tilda Swinton wears Haider Ackermann luxe pajamas as evening wear. (Venturelli / WireImage)
Cate Blanchett in a Balenciaga Edition by Alexander Wang blush gazar cape and dress. (Stephen Lovekin / Getty Images)
Maggie Gyllenhaal in a Dior by Raf Simons sculptural black-and-white knit peplum dress. (Jim Spellman / WireImage)
Kerry Washington in a charming Stella McCartney pink shift with lips, hearts, jewels and matchsticks. (Jason Merritt / Getty Images)
Sofia Coppola in a refreshingly demure black-and-white Valentino dress. (Mark Davis / Getty Images for Women In Film)
Amanda Seyfried doing denim right on the red carpet in a Givenchy ruffle dress. (Evan Agostini / Invision/AP)
Chloe Grace Moretz in a distinctively edgy - yet fun - gray and navy Viktor & Rolf suit. (Ian Gavan / Getty Images)