Britney Spears goes from Oscar babe to gym bunny

BRITNEY Spears looks sweaty and weary after a workout at the gym.

Judging by her messy dark barnet and smudged make-up, Britney's shift was a gruelling one as she gets back to full fitness.

The star has battled with her weight since giving birth to her two sons and suffering some personal issues.

But she looked back to her best at last weekend's Oscars as she showed off a toned healthy physique in a long black dress with plunging neckline.

Fresh-faced ... Britney Spears before her gym session

X17Online.com

Britney continues to wear a ring on her engagement finger - despite announcing that her wedding to Jason Trawick was off in January.

In great shape ... Britney Spears heads to the gym

Fame Flynet

In a statement, she said of her former manager-turned-fiance: “I'll always adore him and we will remain great friends.”