During the filming of their big fight scene in Bride Wars, it seems Kate Hudson and Anne Hathway got a little carried away, intouchweekly.com reports.

“We were really tired, and I had this big rock on my finger. I whacked Annie in the face so hard,” Kate admitted on the Rachael Ray show last week. “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.”