Mila Kunis reveals secrets behind amazing post-baby body

Mila Kunis shared the secret to looking so good just four-months after welcoming daughter Wyatt. Photo: Getty Images

Mila Kunis says she has breastfeeding to thank for helping her lose her post-baby weight.

The 31-year-old first-time mum gave birth to daughter Wyatt Isabelle only four months ago, however the actress has been praised for her stunning red carpet return this week, leaving many wondering how she did it.

Mila dished the secrets behind her drastic weight loss while appearing on Jimmy Kimmel Live on February 3.

RELATED: Mila Kunis plays coy over Ashton Kutcher wedding rumours

"It's been four months," the Black Swan actress said.

Jimmy, 47, replied: "Yeah, but that's impressive."

"Breastfeeding is like working out," Mila explained, to which the talk show host quipped: "I have a daughter. She's 6 months. I've been trying that. She won't latch on."

GALLERY: Ashton and Mila's sweetest moments

"I am very active. I hike almost every day with her. I strap her in a papoose and away we go," added Mila.

"Oh exercise, I didn't think of that," Jimmy responded.

Mila and fiance Ashton, 36, have been widely rumoured to have secretly tied the knot, however the actress has neither confirmed or denied the claims.

Subscribe to New Idea and keep up-to-date with all your favourite celebrities, touching real-life stories, delicious recipes and more each week!

LATEST FROM NEW IDEA:

The Bold and the Beautiful's Linsey Godfrey recovering after car accident

Gwen Stefani: 'My man is out of my league'

Mila Kunis plays coy over Ashton Kutcher wedding rumours