O'Donnell underwent vertical gastric sleeve surgery back in July 2013 and she said she believes she has lost about 53 pounds.
"I'm not used to it yet," she said of the weight loss, according to People. "I still buy the wrong-sized clothes."
O'Donnell once weighed 237 pounds, but said her heart attack back in 2012 was a wake-up call for losing the weight.
It was also a night out at the movies that became a wake-up call for the actress. She recounted a story about chatting with some moviegoers who told her, "I hope this doesn't insult you, honey, but you look a little like that Rosie O'Donnell."
"A lot of people who have never had weight issues their whole life would assume that losing weight and going from morbidly obese to being able to buy clothes off the rack would be only full of happiness and positivity, but that's not true," O'Donnell said. "It's also full of anxiety and vulnerability. I'm glad it's going at the rate it is because any faster than this would throw me into a panic."
The View co-host, Whoopi Goldberg, also revealed she has been working to slim down, saying she has lost around 35 pounds, but is happy at her current weight.
"If I think about [losing more weight], I would start freaking out," Goldberg said. "I'm just doing it."
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