*Just six months after having twins Moroccan and Monroe, Mariah Carey has shed the baby weight and is flaunting her toned abs on both the cover of Us Weekly through a big reveal Tuesday on Rosie O’Donnell’s talk show.

“I gained an enormous amount of weight,” she told “The Rosie Show, “adding that she lost 30 pounds in just three months, totaling 70 pounds. “It was a huge blessing to be able to have the babies. But I felt trapped in my body because I couldn’t move.”

Mariah said she was able to shed the pounds through Jenny Craig. She met with a nutritionist and stuck to a 1,500 calorie diet all the while working out three times a week.

Mariah told Rosie: “The first week, I lost 40 lbs. … of just water. It was just water, initially. When I started with the program, I lost at least 30 lbs. of weight that needed to be lost.”

Mariah Carey (a.k.a. Madame X) in YouTube viral campaign for her appearance on "The Rosie Show'

A series of mysterious YouTube spots led up to the singer’s visit to the OWN talk show. After two weeks and over a million hits, shorts teasing the identity of a mysterious “Madame X” were revealed to be the 41-year-old singer. Tuesday’s episode of “The Rosie Show” also served as the official launch of O’Donnell’s new “Ready Set Go” initiative, a program that aims to help 25 viewers lose weight.