Scarlett Johansson told W in a new interview that she was "so surprised" when she gave birth to her first daughter Rose Dorothy last fall: "Not what I'd imagined," she explained. Credit: Mert Alas

Watching her little Rose blossom! Scarlett Johansson opened up to W magazine in its March 2015 issue about becoming a mom and what it was like giving birth to her baby daughter Rose Dorothy this past fall.

"When she came out of me I was so surprised," Johansson, 30, told the mag. "I had a very strong picture in my mind of what my baby would look like, and, of course, she is completely different. Perfect, but not what I’d imagined."

The Avengers: Age of Ultron actress welcomed her first child with French journalist Romain Dauriac last September, and quietly tied the knot with her beau the following month. While Johansson has remained remarkably private about her secret wedding and newborn child, the actress joked about her famously curvy body to W in its latest issue.

"Everyone has seen my breasts!" exclaimed Johansson, who showed off her ample cleavage on the issue’s cover in a dangerously low-cut shirt. "I can change my top right here."

She also addressed her notoriously husky voice — and the sensual roles that have come along as a result of it. "When I was young, I would talk and everyone thought I had a cold," she mused. "But when I went out for films, they loved my voice. It was a different world."

While she remains in demand for her sex appeal, Johansson told W that there is one role she's coveted for some time now.

"I actually visited Pixar, hoping that they would use me for a cartoon," recalled the star, who memorably leather inimitable voice for Spike Jonez' Oscar-nominated Her in 2013. "They didn’t. I was ripe for the picking! What happened? ...Now they have to give me a cartoon! I just called them out."

It makes sense because Johansson told W in her screen test that she's actually a huge fan of WALL-E. "My favorite love story -- I would say Wall-E and EVE!" she shared. "When his lights go out and he gets rebooted. I about die."