Ashton Kutcher is preparing to propose to Mila Kunis.

The 35-year-old actor plans to pop the question to his girlfriend in the next few weeks after finalising his divorce to Demi Moore on Tuesday (26.11.13), ending a two year legal battle over their $300 million fortune.

A source told ''Ashton and Mila have talked about getting engaged and married for quite a while. He wants to get engaged during the holidays.

''Ashton's been waiting for his divorce to be over for a long time. He was annoyed it took so long. It was hanging over his head.''

In the wake of the revelations, the couple's former 'That 70's show' co-star Laura Prepon has admitted she is expecting a high profile role in Mila and Ashton's upcoming nuptials.

She said: ''Of course I will [be there]. Are you kidding? All of us are going to be right up there on the altar.''

Rumours of an engagement began to circulate around the pair - who began dating in April 2012 - after Mila was reported to be pregnant with the couple's first child earlier this year.