Taylor Momsen doesn't know how to function when she's not working -- which is ironic, given that she frequently held up production while she was a cast member on Gossip Girl.

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"I'm completely neurotic, totally anxious and high-strung all the time," Momsen admits in the February/March issue of FHM UK. "I sleep for about four hours a night, or day, really. I go to bed at 9 a.m., sleep for four hours, then get up and start the day again."

"To be honest, I don't know what to do when I'm not working," Momsen insists. "I lose my mind if I'm not constantly doing something."

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Momsen and costar Jessica Szohr left Gossip Girl for good in May 2011. These days, the Pretty Reckless front-woman is known as much for her music career as she is for her gothic look.

"I love stripper shoes and I always try to find the tallest ones. I'm always surprised no one talks about my shoes. I'm, like, on stage in 15-inch heels but people talk more about my eye make-up, which has stayed the same forever," Momsen tells FHM UK. "I always think that's funny."

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"I got into heels when I was little, though," she explains. "My mom's really short so she always wears really tall heels and I used to steal them and now it's just a part of my everyday life."

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