With filming on Marc Webb's untitled Spider-Man reboot about to begin, Emma Stone has stepped out and shown off her new blonde hair style for Gwen Stacy.  The actress sported her new do while walking the red carpet at Trevor Live at the Hollywood Palladium on Sunday.  Stone, who is best known as a redhead but is naturally a blonde, will be playing the love interest in the film opposite new Spidey/Peter Parker Andrew Garfield (The Social Network).  The film also stars Rhys Ifans, Sally Field, Martin Sheen, Iffran Khan, Campbell Scott, Julianne Nicholson, and Annie Parisse.

Hit the jump to check out Stone looking lovely as a blonde.  The Spider-Man reboot is set to open in 3D on July 3, 2012.

Click over to Just Jared for more images of blonde Stone.