Today is the day!
To get her fans extra excited, the 19-year-old teased some of the goodies to Snapchat on Thursday. Take a look (below):
[Image via Instagram.]
The blonde cutie made an appearance today at the Cannes International Film Festival with Ryan Gosling on her arm.
The two attended the Blue Valentine photocall, with Williams looking exceptionally gorgeous in her sparkly dress.
And although we found her shoes to be a bit too casual for the dress, we're still liking the overall look.
[Image via WENN.]