It will be the ninth child for the 60-year-old actor and the first for his 26-year-old partner of two years.
Gibson has seven children with ex-wife Robyn Moore: Hannah, 36, twin boys Christian and Edward, 34, William, 31, Louis, 28, Milo, 26, and Thomas, 17.
He also has a six-year-old daughter, Lucia, with former girlfriend Oksana Grigorieva.
The Oscar winner and Ross, a writer and former champion equestrian vaulter, first went public with their romance at this year's Golden Globe Awards in January, where they were spotted leaving an after-show party hand-in-hand.
“She is great for him,” a source told WHO recently.
“She has her own life, but also seems to enjoy Mel’s … They are very much on the same page.”
You might also like...