Allison Williams on how 'Get Out' can be informative to white audiences, what she kept from the set of 'Girls'

— -- Allison Williams wants you to know that she’s not Marnie from HBO’s “Girls” anymore. And she’s even dyed her hair blonde to make it easier to tell the difference.

“It was for a magazine cover and also just to help train my mind to know that I’m not her anymore,” she said of her new hairstyle with a smile. “She’s gone. She’s gone now.”

On “Girls,” which is in its sixth and final season, Williams said she often found it frustrating to play Marnie.

“Because it was this feeling of knowing better from a bird’s eye view and then still having to do it. So anytime she slept with someone’s ex, anytime she was unfaithful,” Williams, 28, said in an interview on ABC News’ “Popcorn with Peter Travers.” “She has this one Achilles' heel ... which is just the entire category of men.”

Watch the full interview with Allison Williams on ABC News' "Popcorn with Peter Travers" on ABOVE.

As filming for the show reached its conclusion, Williams said that as much as she loved the role, she was ready to let Marnie go. But not before she took a few items from the set.

“I bought -- at a very good price -- Marnie’s wedding band and engagement ring from the set, and I have a lot of her clothes,” she said.

Now, Williams has made the jump from television to the big screen with the box-office hit “Get Out.” The movie, directed by Jordan Peele and starring Daniel Kaluuya as her black boyfriend, is her first feature film.

Williams plays the character Rose Armitage, who brings her black boyfriend Chris Washington home to meet her white liberal parents. Rose tells Chris that her parents don’t know he is black, and after they meet, she notices her family is acting abnormally around Chris.