Sean Penn's Daughter Explains Why Charlize Theron Is Her Dad's Perfect Match

"She's great and they're amazing together," Dylan Penn gushed.

ByABC News
October 30, 2014, 10:02 AM
Sean Penn and Charlize Theron attend the Christian Dior show as part of Paris Fashion Week - Haute Couture Fall/Winter 2014-2015 at Muse Rodin, July 7, 2014, in Paris.
Sean Penn and Charlize Theron attend the Christian Dior show as part of Paris Fashion Week - Haute Couture Fall/Winter 2014-2015 at Muse Rodin, July 7, 2014, in Paris.
Getty Images

— -- Sean Penn's daughter Dylan has said she approves of her dad's relationship with Charlize Theron.

Now, she's explaining why.

"Well, she's brilliant for one thing," she told Us Weekly. "And she's the only woman since my mom [Robin Wright] who can shut my dad up. The only woman! That is a f***ing challenge so ... She's a powerhouse."

Penn, 54, and Theron, 39, were first linked last winter. Now, according to Dylan, 23, they're in Theron's native South Africa, where they're working on the film, "The Last Face." (Penn is directing and Theron is starring.)

Because of the distance, Dylan said she hasn't seen them recently, but added that Theron is "awesome."

"She's great and they're amazing together," she said. "As long as my dad's happy, I'm happy for them."