As a kiddie actress, Allison Mack grew up in front of the cameras without a single memorable role. All that changed when she matured into the WB’s Smallville. As girl reporter Chloe Sullivan, Allison passes as a high-school hellcat competing with pal Kristin Kreuk--as Lana Lang--for the affections of Tom Welling’s young Clark Kent. Kristen’s lovely and luscious, but there are plenty of male