Allison Williams goes blonde for Allure magazine

Feb. 8 (UPI) -- Allison Williams recently switched up her look for Allure.

The 28-year-old actress debuted new, platinum blonde hair on the magazine's March cover and discussed the transformation in the interview.

"I like it," the Girls star said of her new 'do. "Especially this blonde -- it feels like it is just a new twist on the same old me. It's just hair! But it's fun. Maybe I'll become this gorgeous bombshell vixen. Or maybe I'll still just be the adult-spelling-bee spirit I've always been."

"I think if I'd used my middle name professionally -- Howell Williams -- I'd have a totally different career," she added. "I'd be an indie darling. I'd be fighting with Greta Gerwig for parts. I'd have gone blonde earlier."

Williams, the daughter of longtime NBC journalist Brian Williams and TV producer Jane Stoddard, also shared a photo of her new look Wednesday on Instagram. She explained she dyed her hair after filming the final season of Girls.

"Here it is IRL. Still getting used to it, but I dig it. Thank you @auracolorist and @rebekahforecast for helping me say goodbye to Marnie -- and to @allure for the nudge!" the star wrote.

Williams, who sported brunette hair for years, previously discussed her approach to beauty in a 2013 interview with Harper's Bazaar. She admitted at the time that her real-life look is much different from Marnie's.

"I definitely hand myself over to the hair and makeup gods of Girls. Our look on the show is very specific and it's different from mine in real life, although I've definitely learned things from working with both the hair and makeup people for the show," she said.

Girls will premiere a sixth and final season Feb. 12. The HBO series co-stars Lena Dunham, Jemima Kirke, Zosia Mamet and Adam Driver.