Gladiator goddess or sci-fi dream? Either way, this vivacious look goes down as one of her best.
The former Victoria's Secret model was red hot, as she channeled the iconic Betty Boop.
In her second year hosting, the star went full Lady Godiva—horse and all!
While the model's looks have become a lot more elaborate, for her very first party she was just Heidi (as in the character from Johanna Spyri’s German novels), choosing to dress up in a dirndl "but not a tradtional dirndl," she told People. "And in those days I still did my hair and makeup by myself."