New mom Scarlett Johansson is back to her pre-pregnancy shape!

The Avengers actress stepped out Monday for the first time since having her daughter Rose Dorothy with fiancé Romain Dauriac in September. She wore a black and white printed dress showcasing her svelte post-baby body.

PHOTOS: Postpartum Weight Loss: Stars Who Got Their Pre-Baby Bodies Back After Pregnancy In Record Time

But how did she get those famous curves back in such record time?

A source told exclusively that ScarJo spent two-hours-a-day in the gym and ate tons of superfoods!

PHOTOS: Celebrities Who Were Engaged and Pregnant at the Same Time

“Her body’s bounced back into shape faster than she’d expected,” an insider told OK! “She looks and feels amazing!”

The insider said Scarlett does cardio and kettle bell workouts in the gym as well as yogalates twice a week.

PHOTOS: The Master List Of EVERY Celebrity Involved In The Naked Photos Hacking Scandal

ScarJo is also “very careful about what she eats,” according to the source. “She has a superfood with every meal, so it’s blueberries, oats, broccoli, pumpkin, salmon, soy, spinach, walnuts, yogurt and green tea.”

The starlet is also rumored to do waist training like Kim Kardashian to cinch her waist.

Sound off in the comments below!

Join the conversation