Mila Kunis 'Desperate' To Lose 45 Pounds Following Birth Of Daughter Wyatt Isabelle

Less than one month after giving birth to her daughter, Mila Kunis is kicking her post-baby workout into high gear.

"Mila is doing an hour each of yoga and Pilates a day,” a source told OK!. The source added that the actress is determined to drop the 45 pounds she gained while pregnant with Wyatt Isabelle, her first child with husband Ashton Kutcher.

So what other steps is Kunis taking to lose the extra weight?

For more on the story, pick up the latest issue of OK! magazine, on stands now.