Isabel Lucas

Isabel Lucas has received mixed reviews of her red carpet appearance for Transformers: Revenge of the Fallen premiere in Tokyo. Lucas wore a short cream frock and striking stilettos in gold. However the actress faced criticism at home for her use of bronzer, with one tabloid claiming it was way too strong. The newspaper claimed Lucas "paled in comparison" to starlet Megan Fox, who wowed in a classic purple Hollywood gown. But a sister paper claimed Lucas indeed "held her own" next to Fox, who has been dubbed the sexiest woman alive.

Lucas also reportedly had her arrest warrant for protesting pilot whale killing by the Japanese ignored by Japanese police in order to attend the gala. When "Transformers" hit the big screen in 2007, audiences knew to expect a turbocharged bunch of feuding robots, backed by an arsenal of CGI wizardry. What they also got was the impossibly hourglass-shaped Megan Fox bending over the engine of hero Sam Witwicky's bumblebee-yellow Camaro. The mechanically savvy Mikaela still holds the crown as every robotics nerd's dream date. But starting today, she better watch out. In "Transformers: Revenge of the Fallen," she faces competition that comes with sweeter weaponry than the average Decepticon.

Australian hottie Isabel Lucas joins the franchise as Alice, an alluring classmate Sam (Shia LaBeouf) meets in his first days at college. "An interesting relationship develops between myself and Shia," Lucas, 24, has said. In interviews she remains coy about the exact nature of the characters' bond. "I'm not allowed to give too much of that away." The Aussie actress landed the part after shooting an HBO miniseries, "The Pacific," a Steven Spielberg/Tom Hanks-produced foray into World War II action that will hit TV next year. Spielberg suggested Lucas for a role in the "Transformers" sequel.