The actress met Driver when she filmed her guest spot on Bowen's show Modern Family.
"I was totally petrified," Bowen told PA. "And obviously she comes on set and is such a ballsy, fun, cool girl and within three minutes I was like, 'I can't believe I was scared of her, she's just awesome'."
Bowen added that she was impressed when she worked with Driver, saying: "You know with some people you get it, you know why they're a movie star? She really is a movie star. She's got this big personality and she's about 1,000 feet tall and she's funny and she's easy to get along with. I couldn't have enjoyed it more."
Modern Family continues Wednesday at 9/8c on ABC in the US and Thursday at 8pm on Sky1 in the UK.