According to TMZ, Mila is reported to have given birth at Cedars-Sinai Hospital in Los Angeles with her doting partner by her side on Tuesday just gone.
While there's no confirmed name as of yet (boo!), the 31-year-old actress and her new daughter are said to be doing very well indeed.
The famous pair - who confirmed their engagement back in February - may be notoriously private about their relationship but, in an interview with Ellen DeGeneres, Mila opened up about her usual cravings and how Ashton was ever-prepared throughout her pregnancy...
Speaking of her 36-year-old beau, she revealed: 'He assumed that I was gonna have goofy cravings, so he stocked our fridge with weird food. Just, like, pickles and sauerkraut, or, like anchovies and ice creams, just in case at one point during this pregnancy I'd be like, "I really want something".'
Ashton also let us in on how he was prepping for their imminent arrival with an all-telling Twitter pic. Simply captioned 'Nesting.... Too much?', Ashton posted this shot of what appears to be the couple's living room.
Ashton, lets get one thing straight - an indoor slide and life-size gorilla are NEVER too much.
Now that their daughter has been born, we can only wonder how long it will be before this adorable couple tie the knot. We're already swooning at the thought of the baby girl as a flower girl...
Major congrats, guys!
By Maxine Eggenberger