Pregnant Mila Kunis' bra size has "tripled" due to her growing baby bump, the "Jupiter Ascending" actress revealed in an interview with Marie Claire's July 2014 issue. Mila Kunis said that the "best day" of her life was when fiancee Ashton Kutcher proposed.

While waiting for her baby's due date, Mila Kunis is enjoying the joys of pregnancy - including her growing bra size.

"They're amazing! They've tripled in size," the 30-year-old actress said. "I was a 34A; now I'm a 36C. I'm so excited! I'm telling everyone I know, 'Go ahead, touch them!' Without being an a--hole, I have to say, I love being pregnant."

Check out her baby bump in the photo above!

The former "That 70's Show" co-stars dated quietly for two years before Kutcher proposed a few months ago.

"The best day of my life so far was the proposal," Mila Kunis said. "I cried. I was a mess."

"Not to discredit any relationships in my past," Kunis continued, "but this relationship is different."

Mila is usually very private about her relationships; the fact that she's talking so openly about fiancee Ashton Kutcher reveals that the actress is truly in love.

And Ashton is just as devoted to Mila.

As we previously reported, during her interview on "The Ellen DeGeneres Show" in May, Mila excitedly shared that her future hubby has been learning how to speak Russian for her (Mila was born in what is now Ukraine, and moved to America when she was a teenager).

"He's learning Russian so he can speak to the baby in Russian?" Ellen asked.

"He's been taking classes for probably like six months now," Mila told DeGeneres of the "Two and a Half Men" actor. "He does it twice a week. A woman comes to the house to give him lessons...It's really, really great."

Kunis also talked about how she and Kutcher were able to keep their engagement a secret for a while.

"We were able to keep this private for two months-two months without anybody knowing. I think everybody assumed we've been engaged for so long that I was wearing the ring in public for two months and no photograph was ever...like nobody ever commented on a single photograph," the movie star recalled. "Like it was just not...they just decided not to acknowledge it for two months. It was amazing."

In the Marie Claire interview, the "Black Swan" actress said she doesn't want her kids to turn out to be "a--holes."

"I feel like so many kids nowadays are. Both of us just want to have well-behaved, honest, nice children who people meet and say, 'That's a good kid,'" she said.