Mila Kunis and Ashton Kutcher have reportedly become parents to a baby girl.

Mila Kunis welcomes daughter
Mila Kunis has reportedly given birth to her first child with fiance Ashton Kutcher

According to TMZ, the pair arrived at the Cedars-Sinai Medical Center in Los Angeles at around 6:00am on Tuesday, eventually welcoming their daughter into the world that evening. The girl’s name has not yet been revealed, and no other details of the birth have been confirmed either by the stars’ representatives.

It’s the first child for both Kunis (31) and Kutcher (36), who announced their engagement back in February this year. When Kunis made the announcement that she was pregnant on the 'Ellen DeGeneres Show' in May, she said that they had intended to keep it a secret for as long as possible.

Reports over the last few months indicated that Kunis has become very spiritual in the last few months of her pregnancy, harmonising with her fiancé’s Jewish faith which had become more serious during his previous marriage to Demi Moore.

Kunis, who provides the voice of the eternally ganged-up-on Meg Griffin in ‘Family Guy’, told Marie Claire magazine back in July that she and her former ‘That ‘70s Show’ co-star Kutcher were looking forward to becoming parents. When asked about parenting styles, she displayed a very down-to-earth attitude: “I just don't want my kids to be assholes. 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 also told W magazine that she was intending to scale back her professional commitments after giving birth, which could explain Seth Macfarlane’s recent decision to not retain her services for the upcoming sequel to Ted. “I have never wanted to be the person who only has business on her mind,” she said. “To me, this job has always been a hobby that turned into a great profession, but I don’t eat and breathe acting.”

More: Mila Kunis to be replaced by Amanda Seyfriend for upcoming Ted 2.