Mila Kunis' baby weight is already coming off! Kunis recently stepped out after giving birth to son Dimitri Portwood late last month. And she looked incredible!

Photos show Kunis and Kutcher with huge smiles on their faces as they walked together in Los Angeles earlier this week. And they were clearly enjoying some alone time away from the kids.

It was their first public outing since Dimitri was born.  The 8-pound, 15-ounce baby arrived at 1:21 a.m. on November 30.

CLICK HERE TO SEE MILA KUNIS' POST- BABY WEIGHT LOSS

Fans couldn't help but notice how thin Kunis looked in the new photos. But it's no surprise Mila Kunis has already shed some of the baby weight. After all, she had to spend much of her pregnancy chasing after daughter Wyatt Isabelle.

Mila Kunis Ashton And Wyatt Chasing around little Wyatt must have helped Mila Kunis stay fit during her second pregnancy (Photo: Sharpshooter Images / Splash News).

"She is feeling good, although taking care of a toddler while pregnant is different for her than the first time around, where she could rest a lot more," an insider told E! News before Kunis gave birth. "Ashton dotes on her though. He always carries Wyatt and doesn't want Mila doing any lifting at all."

HOW MILA AND ASHTON PREPARED FOR BABY NO. 2 ...

Kunis similarly lost weight quickly after giving birth to Wyatt in 2014. Less than two months after having her first child, a source said she looked "fit and healthy." She later credited breastfeeding with helping her slim down, calling it " a great workout."

Kunis also said that she ate a lot after giving birth to Wyatt. But she added, "I do love to eat healthy."

Mila Kunis 2015 Mila Kunis looked stunning at the 'Jupiter Ascending' premiere just four months after giving birth to Wyatt Isabelle (Photo: London Entertainment /Splash News).

And Kunis exercised immediately after her first pregnancy, as well. Sources told E! News at the time that Kunis would walk around the neighborhood with baby Wyatt.

HOW MILA KUNIS HAS TRANSFORMED SINCE BECOMING A MOM ...

"It's very private and peaceful," the insider continued. "She and Ashton have also taken long walks along the bike path in Santa Monica. Their house has a hiking trail outside of the front door and Mila also loves hiking in the canyon."

What do you think of Mila Kunis' post-baby weight loss? Let us know your take in the comments section below!