22/01/2014 05:33 GMT | Updated 22/05/2015 06:12 BST

Mel And Oksana Having A Baby!

According to TMZ sources, Mel Gibson and his new girlfriend Oksana Grigorieva are having a baby. Gibson has reportedly informed his estranged wife Robyn -- and their seven children -- about the news. Sources say Grigorieva is in her second trimester.

Though the Gibsons only officially separated in April, Gibson's divorce papers revealed they had split up a month after Gibson's DUI arrest in 2006. They have been married for 28 years.

The 'Braveheart' star, 53, debuted his new girlfriend at the LA premiere of 'Wolverine' on April 28, walking the red carpet hand-in-hand with the 39-year-old Russian musician. She was one of four different women named Oksana linked to Gibson in the tabloids, but with their outing he dashed all those reports.

Grigorieva is a singer who is signed to Gibson's record label Icon Records. She has an 11-year-old son with her former partner, actor Timothy Dalton.