Yup, she did it again.  Seems Britney just can't leave that hair alone!

Well hopefully this time things look a lot better than the rat's nest she's been wearing on that skull of hers, and more hairy than the Mr. Clean look of last year's breakdown.

Britney's haristylist (she has a hairstylist?  With eyes?) Kim Vo, says he's just given Britney a while new look:

"Last time we gave her that simple look," Kim explains. "Now it's geek-to-chic. We're going to keep up that glamorous look... We've been adding a lot of blonde pieces."

And while Britney has been known to change her hairstyle frequently, Kim said that this time the hit CBS show How I Met Your Mother is actually the one barking the orders at Britney's head.

"I was honestly shocked she did it again," Kim says about Brit's decision to revisit the role on HIMYM. "She had a great time. I'd love to see her break into something else. I think people want her to make it back."

As how Britney, whom Kim calls "truly a sweet soul," he admits that "she's very vulnerable." On the bright side, he also says that she is "calm, serene, peaceful" at home and cooks a great chicken!

"Her first focus is the kids," he adds. "But like any 26-year-old, she's gotta work. You'll go crazy if you stay home all day!"