Model Dylan Penn has given her dad Sean's new girlfriend, Charlize Theron, a big thumbs up, insisting she's the only woman who can shut the Mystic River star up.

The 23 year old has nothing but love for Theron, confirming she and her father are very much an item.

Dylan tells Us Weekly, "She's awesome. They've been away for months working together in South Africa, so I haven't seen much of either of them. She's great and they're amazing together. As long as my dad's happy, I'm happy for both of them.

"She's brilliant for one thing, and she's the only woman since my mum (Penn's ex Robin Wright) who can shut my dad up. The only woman! That is a f**king challenge... She's a powerhouse."