Hugh Grant has become a father for the fifth time.

The 'Love Actually' actor and his girlfriend Anna Eberstein -

who already have son John, five, and a two-year-old daughter together - welcomed a baby into the world last week, his former partner Elizabeth Hurley has revealed.

Hugh, 57, also has six-year-old daughter Tabitha and five-year-old son Felix with his former partner Tinglan Hong, and Elizabeth - who he dated for 13 years until 2000 - made the revelation about his fifth child when asked if she was surprised by how many kids he's had.

Appearing on 'Watch What Happens Live with Andy Cohen', she said: ''He had another one last week. He has five. He was over 50 when he spawned them all.''

And the 'Royals' actress was full of praise for her close friend's parenting skills, describing him as an ''enchanting'' dad

Asked again if she's shocked by his late venture into parenthood, she replied: ''No, he's an enchanting dad. Really, really sweet.''

And the 52-year-old actress joked being a parent had ''improved'' the 'Four Weddings and a Funeral' star - who is godfather to her 15-year-old son Damien - and made him a less ''miserable'' person.

She said: ''Having these kids has transformed him from a very miserable person into a fairly miserable person. It's improved him. He's gone up the scale.''

Hugh recently spoke of how close he and Elizabeth have stayed despite the end of their relationship.

He said: ''We're like brother and sister... I think it's partly because we went from zero to somewhere together.

''We went through terrible years at the beginning when neither of us had any work, living in a tiny flat. It was quite bonding.''