Mila Kunis says she's "lucky" her two children get along so well.

Mila Kunis

Mila Kunis

The 33-year-old actress is mother to two-year-old daughter Wyatt and three-month-old son Dimitri - both of whom she has with husband Ashton Kutcher - and has said she feels blessed that her eldest child doesn't get "envious" of the attention her little brother gets, and even wants him to sleep in her room.

Asked how Wyatt is adjusting to having a new baby in the house, Mila told E! News: "She loves it. She loves her brother. She wants him to sleep in her room and doesn't get jealous or envious. She's great. We got very lucky."

Whilst the 'Bad Moms 2' actress might be in heaven with her two well behaved tots, she isn't desperate to have a third just yet as she doesn't want to "test her luck" by expanding her brood.

She told 'Entertainment Tonight': "We're good on two right now. We're solid. It's perfect, it's like, great, you know? I have two really healthy, really wonderful kids. Why test my luck?

"[With two kids] you're running defence a little bit, like, one's got one and the other's got one and it's OK. I think it's when it becomes three is when you're like, you're just playing offence. I don't know what you do at that point. You're scrambling trying to keep them all in line."

Mila's decision to put plans for a third baby on hold comes after the 'Black Swan' actress claimed both herself and the Ashton, 39, "knew" their family wasn't "complete" when Wyatt was born.

She said: "I've always said this; I think you know when your family is complete.

"After we had Wyatt, the second that I gave birth, I was like, 'I know that we need to have another baby. We both knew it, we just felt it. And so I always say after the second one, we'll know if we need to have another one.

"I really do believe you know when your family is complete."