The Evolution Of Demi Lovato's Eyebrows On The "X Factor"

Brow size: thin.

Brow size: thin.

Brow size: thin.

Brow size: thin.

Brow size: thin.

Brow size: thin.

Brow size: thin.

Brow size: thin.

Brow size: thin.

Brow size: thick.

Brow size: full.

Brow size: Average.

Brow size: Full.

Brow size: Average.

Brow size: gone!

Brow size: Ahhh!! Demi, watch out, I think there are caterpillars on your face?!

Brow size: Huge. (Lily Collins, is that you?)