LAST DANCE FOR BRITNEY!

Prancing pop tart fearing career spiral after foot injury

TOXIC singer Britney Spears is tumbling into another tragic tailspin that may leave her locked away in a loony bin because the booty-shaking pop princess fears injuries could prevent her from ever dancing again, sources squeal.

Guests at L.A.'s notorious Chateau Marmont hotel recently bellyached about a disturbance being caused by a boozy gal matching Britney's description the same night the ruffled songbird allegedly bickered with her bad news beau, felon Paul Richard Soliz! "People said she was drunk and fighting with her boyfriend who wanted to leave. But she demanded he stay and was screaming at him," an insider spills.

"She must have decided she was some sort of acrobat and was doing leaps and cartwheels down the hallway.

Then she landed badly, hurting her ankle. She was shouting to the rooftops about the pain." Shortly afterward, disheveled and barefoot Britney, 42, was photographed being escorted outside by paramedics, her security detail and Soliz, 37. The scantily clad star appeared to be only wearing panties with a blanket thrown over her shoulders as she clutched a pillow to her chest - hours after a judge signed off on her divorce with third hubby Sam Asghari, 30.