This time as the character Jenny Humphrey on the hit seriesGossip Girl.

It sounds dramatic on-screen, but it may even have been more so in reality.

Asource close to the show admitted Momsen was given the bootbecause of her “unreliable and erratic behavior.”

Taylor Momsen as Cindy Lou Who

Unreliable and erratic behavior, eh?

We guess it’s fitting she decided to become a rock star.

These days, Momsen is the lead singer of a rock band, Pretty Reckless.

Taylor Momsen singing on stage

I’m gonna be playing rock and roll music till I’m dead.

We think little Cindy Lou Who would support Momsen no matter what she chooses to do.