Mila Kunis has opened up about her pregnancy in the July issue of Marie Claire magazine, revealing that when the baby comes only fiance Ashton Kutcher will be allowed in the room with the doctor, but on one condition.

"Two people are allowed in my delivery room," Mila tells the magazine. "My doctor and my significant other. And he is staying above the action.

"He'll be head to head. Not head to vag. Unless he wants to risk his life and see. But I wouldn't if I were him."

Mila also didn't hold back when talking about what she expects to happen, either, getting almost graphic with the details.

"I highly doubt [Kutcher] wants to see that being ripped apart and shredded. Because it will be shredded. It's just a matter of how badly."

The actress also gushed about Kutcher, saying that there was nothing awkward about taking their friendship to the next level.

"One day, it just changed. All of a sudden, it wasn't the same," she explains. "And I was really proud of myself for acknowledging that.

"The best day of my life so far was the proposal. I cried. I was a mess. Not to discredit any relationships in my past, but this relationship is different."

Mila also tells the July issue of the magazine, which hits newsstands June 24, that she loves being pregnant -- more specifically because her breasts have increased in size.

"They're amazing!" she exclaims. "They've tripled in size. I was a 34A; now I'm a 36C."

"I'm so excited! I'm telling everyone I know, 'Go ahead, touch them!'" she adds. "Without being an a**hole, I have to say, I love being pregnant."

Mila and Ashton starred together in "That '70s Show" and remained close friends since the show ended in 2006. They hooked up several months after Kutcher's split frome ex-wife Demi Moore.