Kate Hudson (left) chats with Rachael Ray
David M. Russell/THE RACHAEL RAY SHOW
01/08/2009 at 07:00 PM EST
Call it dedication to her craft: Kate Hudson
says she got into character a little too much
on the set of Bride Wars
, when she inadvertently punched costar Anne Hathaway
in the face during the movie's catfight scene.
"We were really tired, and I had this big rock on my finger. ... I whacked Annie in the face so hard," Hudson said on the Rachael Ray
show Friday. "She was like: No, no, keep going because she was so into it ... Two hours later, she's sitting in the back of a car with an ice pack on her face. I was so bad. I really clocked her."
Hudson, 29, also told Ray about the main man in her life – her son Ryder.
"He's got a different brain than I do. I was all sport and energy. ... Ryder is a mind child," she says, "He really loves music, and he knows every word to "Viva La Vida," the Coldplay song."
She's also surprised how quickly he's growing.
"Today we were talking about the day he was born...and now that he's 5, it's like: Mom come on I'm going to be five for a whole year. I'm like: Wow, that's amazing, one whole hand," Hudson says.
Kate is PEOPLE's 'Most Beautiful' RELATED GAMES:
Find out who Kate & Anne have hooked up with in Love Connection!