Elizabeth OlsenSplash News; Courtesy Photo

It Girl Elizabeth Olsen turned heads in an Alexander McQueen dress at the New York Film Festival premiere of her film Martha Marcy May Marlene this week, and we got exclusive behind-the-scenes photos of her primping routine! Thanks to hairstylist Mark Townsend and makeup artist Gita Bass, the rising star rocked an adorable top knot and perfect pout. “Lizzie had to wear the dress during hair and makeup because the neck didn’t open,” Townsend tells InStyle.com of the preparations. To find out how to get the look and see more exclusive photos, click through the gallery now!