Mandy is an actress who became an instant internet celebrity based on her appearance on the iTunes + Pepsi ad that appeared during the 2005 Superbowl. Given the wide audience and the connection to Apple computer, numberous postings were made almost immediately after the commercial first aired.
The most famous posts are on a blog called That Pepsi Girl, which is entirely dedicated to Mandy, and maintained by blogger/stalker "Justin" from Michigan.
Also, here's Mandy's Maxim Online page in case you haven't already seen it. You'll find two other Web Only pics from her photoshoot on there too.