Credit: Norman Scott/; David Livingston/Getty

Well that was a fast hair color switch!

After crossing to the dark side for her role in Adult World, Emma Roberts is back to being a blonde!

On Monday, the starlet, 20, hit up a cocktail party in West Hollywood with a hair color that can only be described as "bronde" -- a light brunette shade with blonde, sun-kissed highlights. Stars like Jennifer Aniston made the hue famous through the years.

At the event, the stylist actress donned a floor-length black maxi skirt teamed with a long-sleeve embroidered blouse and carried a black satin clutch.

Still, Roberts' lighter hair color this time around is darker than the blonde with grown-in dark roots that she rocked back in January.