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The Pirates of the Caribbean star has always had a thinner physique, but she turned heads at the premiere of the latest Pirates installment last year looking like she had misplaced her beautiful curves. Kiera Knightley recently made headlines when she announced she was suing the UK's Daily Mail newspaper for suggesting that she suffered from an eating disorder and maintains that she leads a healthy and active lifestyle.

Jessica Simpson has never been overweight in the public eye. However, she turned heads when she landed the sassy role of Daisy Duke in The Dukes of Hazzard and slimmed down to slide in to the legendary short-shorts. She flaunts her slimmer figure by washing a car in a string bikini in a revealing music video which covers Nancy Sinatra's These Boots are Made for Walking and was voted the #4 Sexiest Woman in the World by FHM magazine in 2006.

Lindsay Lohan is almost as well known for fluxuating weight as she is for her partying ways. The young actress has been under constant scrutiny for her body image in recent years. Initially known for her curves, Lohan drastically dropped weight after being hospitalized for "exhaustion". Shrugging suggestions of an eating disorder off, she attributed her new stick-thin look to 'old-school working out'. However in recent months, Lohan has publically announced her quest to put some weight back on because she 'missed her curves'.

The once rounded-face Kate Bosworth raised eyebrows recently for her rapidly shrinking frame while promoting her movie Superman Returns. The frail looking actress claimed she was overworked and overcoming the emotional distress of breaking up with her boyfriend, Orlando Bloom and had lost a bit of weight - but nothing to worry about. Critics seems to disagree.

The once sidekick to socialite Paris Hilton has taken the spotlight herself for her dramatic weight loss. While dealing with a heroin addction, Nicole Richie's weight was on the heavier side. However, her frame has dwindled down to a reported 85 pounds. Rumours swirl that Richie recently underwent surgery to have gastric bypass surgery reversed, which she denied sternly on her myspace page. She has steadily denied having an eating disorder and entered rehab to help put on weight, only to check out days later.