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OTRC: 'Biggest Loser' winner Rachel Frederickson: I've gained about 20 lbs

Rachel Frederickson is named 'The Biggest Loser's season 15 champion on Feb. 4, 2014. (Trae Patton / NBC)

Rachel Frederickson, who won season 15 of the NBC reality show "The Biggest Loser" and made headlines over her dramatic 155-pound weight loss, says she has since gained about 20 pounds and is now at her "perfect" and "ideal" weight.

The 24-year-old had in February won the $250,000 prize after her victory. She had dropped 59.2 percent of her body weight in seven and a half months, going from 260 pounds to 105, spurring many people to express disapproval online, saying she took her diet and fitness regimen too far.

Frederickson told Us Weekly in an interview posted online on Thursday, April 3, that the backlash she received over her dramatic weight loss was "a gift" because it spurred discussions about body image and that she is now at her "ideal weight" -- 125 pounds.

"I've gone up about 20 pounds," she said. "I think I'm at my perfect weight!" Frederickson told Us she works out six days a week for an hour at a time. "I also loosely count calories, but sometimes I might eat an Oreo. It's not the end of the world."

She has not shared recent photos of herself but did link to a screenshot of the print version of Us Weekly's piece on her on her Twitter page.

Frederickson, whose height ranges between 5'4" and 5'5" -- based on what she has told reporters -- should weigh between 108 and 145 pounds, according to the the U.S. Department of Health & Human Services.

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