The 44-year-old former "Friends" star told Vogue.com her longtime hairstylist Chris McMillan is responsible for her new hairdo.
"Chris McMillan actually chopped all my hair off!" she told Vogue.com.
"I actually don't have any red carpets coming up. This is truly just for me!" she said. "It's right at my jaw line, maybe a little longer. It was kind of spur-of-the-moment. I don't know, man. I did it! I feel great. I feel lighter. It's simple, it's really simple, that's for sure."