Britney Spears Joins Anderson Cooper's Anti-Bullying Movement

Singer tweets her support after a documentary aired on CNN

Britney Spears is lending her star power to a very worthy cause.

Following Thursday's airing of The Bully Effect, a documentary profiling the impact of the anti-bullying movement, on CNN's Anderson Cooper 360, the singer took to Twitter to express her support.

"I'm standing with @AC360 & @bullymovie by joining the movement to end bullying in our generation!" Spears tweeted.

The Bully Effect follows the stories of several of the people first profiled in the 2012 film Bully.

The documentary will re-air on March 3 and 9 on CNN.