LOST star Evangeline Lilly has blasted criticism the cast of the hit US TV drama look too glamorous to be real plane crash survivors.

The 26-year-old model-turned-actress, who plays KATE AUSTIN in the show, claims her character looks as realistic as possible because she's always covered in dirt and is not allowed to brush her hair during filming.

She insists, "How I wake up is how my hair stays in the show.

"We wear almost no make-up and a lot of dirt and oil. They cover us in it.

"I'm disappointed that we come across as perfectly manicured and coiffed as my nails are always filthy, my hands are always scratched up and I've always got bruises all over my body.

"I think I look exactly how I would if I was genuinely stranded on a tropical island."