Britney Spears caused a brawl on her first weekend out of rehab! The rehabilitated pop princess left her Hollywood Hills home at 6pm on Sat Mar 24th and headed to exclusive Epitome Salon in Bel Air, CA. The star entered the empty salon and sat in a chair in full view of the oversized windows while she discussed what she wanted. "She was looking through hair magazines," said an onlooker. "She had a big book that had a bunch of hair samples in it, like the kind you look at if you are going to get your hair dyed or extensions put in." But things took a turn for the worse and the star had to be moved to a back room with closed curtains so she could look over the hair samples away from all the prying camera lenses -- about 40 of them! One onlooker told Star, "It was crazy! Finally, the police had to show up for crowd control! They started pushing people back, mostly the dozens of guys with cameras. But by the time they showed up, there were also loads of curious tourists, too! They were shouting at everyone to get back!" But Brit, visibly shaken by all the unwanted attention, gave up after less than an hour at the salon. She fled through a back door in the salon, hopped into a waiting car and headed straight home. The speculation is that Brit wants hair extensions, as soon as her own stubble grows long enough to support them! But she'll have to be more sly the next time if she wants to get the new 'do done in private!