Mila Kunis and Ashton Kutcher are now preparing for their big day.

The engaged couple has planned to tie the knot after Mila gives birth. And now that baby Wyatt has finally arrived, the former "That 70s Show" co-stars are said to be planning a million-dollar lavish wedding.

As Belfast Telegraph reported, "They're already talking about having a bigger family and Ashton wants them to get married next year in a lavish ceremony. He absolutely adores Mila."

Epoch Times revealed that Ashton will reportedly "spare no expense" for their wedding, and is willing to shed a whopping $2M for their special day.

The website also claimed that Mila is set to have a custom-made wedding dress as she might be expecting again by the time they get married. The couple allegedly wants "to try for another baby right away!"

No official confirmation has been made about the said rumors about Mila Kunis and Ashton Kutcher's wedding preps.

Despite their awesome plans of starting a big happy family, a few rumors have circulated that things are quite rocky at home. Rumors speculate that Ashton might be cheating on Mila, and the two might be headed for splitsville.

A source told Star:

"Ashton and Mila have been fighting nonstop; it's gotten really bad. They've always been very passionate, but now that's turning into a lot of yelling. They are both having a really hard time tolerating each other's issues."

Epoch Times also dished on the rumored disagreement Mila and Ashton had over the latter's ex Demi Moore. Demi reportedly has been texting and calling Ashton non-stop post break-up, and had even come uninvited to the couple's home.

Just recently, Mila Kunis and Ashton Kutcher purchased a 7,351-square-foot mansion in Beverly Hills for $10 million.

Their new house reportedly "sits on about a half-acre of land in the hills and boasts four bedrooms and three bathrooms, and it offers plenty of privacy."

Stay tuned for more Mila Kunis and Ashton Kutcher news right here!