Arizona Muse is without a doubt the model to beat. She burst onto the scene during the Spring 2011 season, with her only visible credit being an Urban Outfitters online model, and has yet to slow down. Dazed and Confused dedicated an entire issue to her, which means that she's in the popularity realm of Agyness Deyn circa 2008 when i-D identified the pixie hair model as an icon.
Just as Aggy spurned a flock of bleach blonde cropped followers, Muse has created a "look" that other models and stylists are trying to embody. Models on shopbop.com and jcrew.com have Muse's high cheekbones, doe eyes, and soft jawline. (J. Crew even uses Muse and her son as models, so they're familiar with her looks.) Up-and-coming model Emily Senko, who doesn't resemble Muse in real life, is styled on the cover of Marie Claire Italia to show off her Muse-like features, specifically her doe eyes and soft cheeks.
You know it's a trend when Vanessa Paradis, the living embodiment of that French je ne sais quoi, appears on the cover of Vogue UK styled with a messy crop of hair, emphasized eyes, and a new sweetness. Think it's a coincidence? Think again. Vogue UK's website just ran a slide show about Muse calling her "the season's most in-demand model."
So, I think this makes it official: Arizona Muse is the "It-model" of 2011.