The 24-year-old voiceover artist, who took home $250,000 on last night's Biggest Loser finale for losing 155 pounds this season (she went from 260 to 105!), took to Twitter today to share a special and very positive message.
"I want to thank everyone for the amazing support," Frederickson wrote. "It's been an incredible journey and I can't wait to start the next chapter of my life."
Frederickson's weight loss and new thin physique has caused a stir on the internet and left some fans wondering if she lost too much weight. Fans also pointed out the shocked looks on judges Jillian Michaels and Bob Harper's faces during her big reveal.
Today, Michaels' rep told E! News, "Jillian Michaels will not comment on Rachel's journey as she was not her trainer. She is celebrating the at-home win of her contestant, Tumi. Any questions about any of the other contestants on the Biggest Loser should be directed to the show's producers."
Additionally, Harper shared via Twitter today, "Jillian and I want to take a moment to congratulate all of the BL contestants on their hard work. We're not comfortable commenting on Rachel's journey because we weren't her trainers and weren't given an opportunity to work with her at any point. Any questions about the contestants on the Biggest Loser should be directed to the show's producers."
NBC and producer Shine America said in a statement: "We support Rachel and all of the Biggest Loser contestants who have shared their journeys over the past 15 seasons. We remain committed to helping contestants achieve healthy weight loss and live healthier lifestyles, and to inspiring viewers to do the same."
Despite some backlash, last night's Biggest Loser finale ratings were a success. The episode delivered the show's biggest audience in more than two years with 7.4 million viewers overall.
(E! Online is a member of the NBCUniversal family.)