Emma Roberts returned to blonde -- again -- on Aug. 4. Credit: Chelsea Lauren/WireImage; Courtesy Emma Roberts

Back to blondeagain!

Just six weeks after returning to her brunette roots, Emma Roberts has lightened her hairand added a lot of length!

"Back to blonde! Feel like myself again. Thanks to @NineZeroOne," the American Horror Story actress, 23, tweeted on Aug. 4.

Roberts' hair is considerably longer than the brunette bob she showed off on June 17 in L.A. Whereas her short 'do grazed her chin, the actress' hair now falls well below her shoulders.

The color and length look similar to the style she rocked back in 2013 before chopping it off into a blonde bob in January 2014.