We knew Kate was excited about her derby duties but we had no idea she would pull a presto chango. Kate wore two different dresses to the same event since she was evidently trying to adhere to the traditional black and white color scheme. At least she admits she looks like she is in a costume. She says, "I am having such a great time. I would liken it to a large costume ball. I missed Halloween, although this is Halloween with more class." I guess this Halloween costume is better than the slutty ones most of young Hollywood was sporting this year. As for her headpiece, I thought people were supposed to wear big hats to Derbys?

For more of Kate's costume changes just