Emma Watson and Justin Beiber

Emma Watson and Justin Bieber had the most influential haircuts of 2011, according to The Wall Street Journal.

"Hairstylists are being inundated with requests for pixie cuts and the Bieber swish. The enthusiasm plays out online, where the fastest-rising searches for celebrity haircuts on Google are for Ms. Watson and Mr. Bieber," the magazine writes.

Check out the fashion hits of 2011

The 21-year-old Harry Potter star first chopped her locks in late summer 2010, telling her fans on Facebook, "I've wanted to do this for years and years; it's the most liberating thing ever." She's since kept up her cropped 'do.

Bieber, 17, has rocked the long, side-swept man-bangs since he came onto the music scene, give or take a few appearances such as this one.

Have you ever gotten a celebrity-inspired 'do?