According to TwiFans, Kristen's acceptance speech was:
"Wow. Thank you. I guess first I have to thank all the fans of Twilight for proving again and again to be THE most devoted and attentive fans ever. Considering this is voted, credit is due to them so thank you. To the other actors nominated, I am so blown away by you that I can't even describe it. To be voted among you is just overwhelming. And I'd like to say hi to my family."
SQUEEEEEEEEEEEEEEEEEEEEEEEE!!!
- Lorabell :D