Lindsay Lohan has denied that she is just a party girl, claiming she works harder than most of her friends' parents.

The 19-year-old singer/actress told US TV show Today, "I work harder than most of my friends' parents, I think. I'm the hardest working person I know."

"I don't really know what to do when I'm not working. I'm a workaholic - I get very creatively frustrated," she said.