Demi Moore
Demi Moore with her ex-husband Ashton Kutcher. The actress has offered to help with Kutcher and Kunis' baby. Reuters

American actress Demi Moore reportedly wants to help former husband Ashton Kutcher raise his baby girl he recently welcomed with fiancée Mila Kunis.

The 30-year-old Black Swan actress gave birth to the couple's daughter, Wyatt Isabelle Kutcher, on 30 September at Cedars-Sinai Hospital in Los Angeles.

The Two and Half Men star split from Moore in 2011 amid allegations that he was unfaithful to the actress. Their divorce was finalised last November.

"Demi is putting the past behind her now," a source close to Moore told Radar Online, adding: "She is in total acceptance now."

"She ultimately has great love for Ashton and has accepted the fact that he is in love Mila and that they are starting a family," the insider added.

Moore "has offered to help in any way that she can with the baby and with Mila".

"Things have settled down a lot, and she wants to be there for Ashton's family," the source said.

Kutcher and Kunis, who played characters Michael Kelso and Jackie Burkhart on the hit sitcom That '70s Show, have been dating since April 2012.

Back in May, Kunis confirmed she was pregnant, during an appearance on The Ellen Degeneres Show.

The Two and a Half Men actor announced the baby news through his A plus website, along with six pictures of babies, one photo of a dog, and another of a young goat.

"Mila and I would like to welcome Wyatt Isabelle Kutcher to the world. May your life be filled with wonder, love, laughter, health, happiness, curiosity, and privacy. Can you guess which one is ours, or does it really matter? All babies are cute," he wrote.