Rihanna unveiled a new brown hairdo over the weekend in Europe. Photo: Bauer-Griffin

The world's biggest hair chameleon has done it again!

Rihanna has ditched her fiery red hue (for now) and returned to her brunette roots.

The "What's My Name?" singer was spotted in Europe last weekend with darker and shorter locks peeking from underneath a camouflage cap.

Over the past year, we have watched the edgy 22-year-old's hair color evolve from bleached blonde strands to two-toned tresses to bright crimson locks. And her style has changed just as much, from her signature bowl cut to extra-long hair extensions to spiral curls.

What's next for RiRi? We never know, but if history is any indication, she will be switching up her 'do again. Rumor has it, her cherry red spiral mane is a wig!

Thinking of going darker with your locks this winter? Check out these professional tips!

And click here for more of Rihanna's bold style moves.