I've not seen TF:3 yet, so I dunno if it's just the previews, but they didn't seem to do her any favors and i thought she looked like a skankier blonde version of Megan Fox. The images in this thread however, make for a definite thumbs up!
Also, LeBouf's comments intrigue me... what was Bay doing that Huntington-Whitely was cool with as a Victoria's Secret model but Fox wasn't?