What’s the most unstable superstar ever?

Keira Nightly.

If you think Keira Knightley is unstable, you're going to blow your mind if you look at Britney Spears or Lindsay Lohan

Lark Voorhees, the woman who played Lisa Turtle on Saved By the Bell.

She's a wackadoodle. Wrote several books about religion, where every word is separated by a comma, every chapter is named the same and on random pages the header misspells her name

She also wears an obscene amount of mismatched concealer that my gay side just can't stomach.