"Yes, I cut my hair off a few days ago! I love it -- feels incredible. Hope you like it!" the 20-year-old Brit tweeted on Aug. 5 before redirecting fans to her updated profile picture on Facebook.
In the black-and-white photo (left), Watson looks like a dead ringer for Mia Farrow, showing off a supershort 'do parted on the side, with barely there bangs and subtle blonde highlights up top.
"I've wanted to do this for years and years; it's the most liberating thing ever," Watson writes on her Facebook wall.
The actress -- and face of Burberry -- will be showing off her new androgynous style all over New York City this week while she's in town promoting "Harry Potter and the Deathly Hallows, Part I" before heading back to study at Brown University in the fall.
Besides the actresses previously mentioned, the pixie cut has also been famously worn by Katie Holmes, Victoria Beckham, and Halle Berry, as well as forebearers Audrey Hepburn, Twiggy, and Jean Seberg.
How does Watson's cut stack up to the rest? Let us know in a comment below.
Should you try the pixie yourself? Read StyleList's short-hair guide to find out.