Jessica Biel has come a long way, baby, from her days as a preacher’s kid on Seventh Heaven. Now that she’s fighting vampires in the upcoming Blade: Trinity, Biel is letting her inner tough-girl out to play. “It was so much fun. I loved it,” says the actress of the action in the movie, which also stars Wesley Snipes and Ryan Reynolds. “What a dream to be able to kick boys’ butts all day long. Girl power!” Girl power, indeed: To get ready for her butt-kicking role as a “Nightstalker,” Biel says she “trained about six days a week in the gym.