Brunette-ney didn't last long!

After a week with dark brown hair, Britney Spears has changed up her 'do yet again -- trading in her chocolate locks for red ones.

The pop star was seen rocking the new look at her concert in Las Vegas earlier this week, proudly displaying new new hue in some meet-and-greet photos posted on Spears' fan site Breathe Heavy.

This is the second time Brit Brit has changed up her look in two weeks, first showing off her brunette locks on the 8th.

We gotta say, we kinda like the red tones she's got going on here. It's definitely a different look for the star, who really has only rocked the color before by wearing a wig in her "Womanizer" music video.

Spears isn't the only previously blonde star to take some dye to her head this week. Molly Sims also went red, citing Julianne Moore and Amy Adams as her inspirations for the change -- see how her makeover turned out here.

What do you think of Brit's hair? Vote in the gallery above!

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