Kunis, who welcomed baby girl Wyatt with Ashton Kutcher in October, made an appearance on The Late Late Show with Craig Ferguson in the US on Wednesday.
When asked how her newborn was doing, the 31-year-old mum replied, "Two months... nine weeks. She's not lethargic. She moves!" reports Just Jared. She also opened up about losing her baby weight and credited breastfeeding with having the biggest impact on her post-baby figure.
As for Scarlett? She also confirmed her slimmed down body had nothing to do with yoga classes or green juices when she discussed being a mum with American journalist Barbara Walters.
The 30-year-old gave birth to her first child, a baby girl called Rose, in September and gave a glowing report of motherhood.
"It's wonderful, and exhausting," she said. "The love is just unbelievable. It's very overwhelming."
"The whole bit. I'm nursing, and I love it, I love it," Scarlett added. "It's the best way to get back in shape."
Just in case you needed proof, the actress attended the 2014 Gotham Independent Film Awards on 1 December in a sequin-embellished little black dress. She's never looked better.
Love Scarlett's look? See more of the star's stunning style below: