According to Isabel Lucas' talent agency, she has been cast in Transformers 2 as "Alice". This role is not part of the possible character breakdown released a few weeks ago. The lovely blond 23 year old has worked for the last few years in Australia but will make her US debut in the movie "Daybreakers" later this year.
The Meissner Management site simply states:
Feature Film “TRANSFORMERS 2” DreamWorks US Production.
Role of ALICE.
According to her IMDB profile she is from Melbourne, Australia. Interesting considering that Rachael Taylor and the rumored casting of Teresa Palmer are also from there. Maybe Bay just likes the accent. Any case it remains a rumor and besides just because the character has a name doesn't mean it’s a major character in the movie.
No idea about who is her, but looks cute.