Mariah Carey, who frequently describes herself as “eternally 12,” told Oprah Winfrey she can now wear her high school wardrobe, Us Magazine reports.

“My jean size went down to my 10th grade size,” the 38-year-old revealed Monday.

“I got tired from people telling me, ‘You need to lose weight,’” she said. “It inspired me.

“For me, it’s not about a number on a scale,” she added. “It’s not about necessarily even a size. It’s about feeling good and being comfortable in your own skin. Right now, I feel really great. I feel better than I’ve ever felt.”

With the help of a diet and nutrition guru, the singer has maintained a very strict diet that limits foods cooked in butter.

Her most coveted indulgence? Mac and cheese.