08/16/2012 09:59 pm ET Updated Aug 17, 2012

Rebel Wilson, 'Bridesmaids' Star, Shows Off Slimmer Figure On 'Jimmy Kimmel Live'

This year's list of celebrity weight loss successes appears to be rounding out with the addition of "Bridesmaids" star Rebel Wilson. The 26-year-old Australian actress who played Kristen Wiig's roommate in the film has reportedly shed 33 pounds as a spokesperson for Jenny Craig.

Wilson showed off her slimmed-down figure during an appearance on "Jimmy Kimmel Live" Wednesday night, where she stopped by to promote her upcoming film "Bachelorette."

According to an Australian affiliate of Yahoo.com, Wilson signed on as a celebrity ambassador for Jenny Craig last July, shedding some 22 pounds in her first ten weeks.

"I was like a marshmallow blob when I started, but now I’m starting to get back into the shape I remember," the comedian told Yahoo, recalling an uncomfortable workout session next to Cameron Diaz during filming for "What To Expect When You’re Expecting" last year. The actresses played alongside each other in the film with Diaz acting as a source of encouragement for Wilson in dropping the weight.

In a blog on the Jenny Craig website chronicling her weight-loss journey, Wilson wrote:

I’m really feeling great now. I’m down to a Size 16 (I was probably closer to a Size 20 when I started) and am actually having to donate some of my clothes that are now too big for me.

According to the Daily Mail, Wilson once tipped the scales at 234 pounds and aims to lose another 22 pounds. She also had to put her dieting on hold last year while filming the upcoming musical "Pitch Perfect," the Mail reports.

Last year singer Mariah Carey showed off her own own weight-loss success, claiming to have lost 70 pounds by way of Jenny Craig. "The first week, I lost 40 lbs ... of just water," Carey told People magazine. "It was just water, initially. When I started with the program, I lost at least 30 lbs. of weight that needed to be lost," she went on to say.



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