Crystal Renn has reinvented herself several times as a model.

In the past, the 5-foot-9 brunette beauty went from a 95-pound 16-year-old anorexic to a successful size 14 plus-sized model.

Now she appears to be returning to her thin frame.

The 25-year-old looked almost unrecognizable Tuesday night at a charitable event in New York City, appearing very thin with short, platinum blonde hair and eyebrows.

"I've been a double-zero, children's clothes, at 95 pounds, and I've been all the way up to a size 16 and everything in between," Renn said to the United Kingdom's Daily Mail. "Now I'm a 6, 8, sometimes a 10, depending on what designer I'm wearing. And that's an interesting place to be in fashion, where extremes are the norm."