She was still rocking her trademark blonde locks in Aspen, Colorado, last week, but it seems Miss Hilton was craving a color change for the New Year!

The heiress stepped out with stunning long brunette locks, matching her all-black outfit, while on an after-Christmas shopping trip to Louis Vuitton (think they have sales?) in Beverly Hills, on Monday afternoon.

But could the new 'do be one of her many wigs? Paris is known to don brunette wigs just for fun at times, so we're guessing the hair color change isn't for real!

After shopping on Rodeo Drive, Hilton got down to business, ending her day with the Tweet: "Nice to come home after a long day of meetings. Time to relax. Bubble bath time. :)."

Do you prefer Paris as a blonde, or brunette?