The pop superstar certainly seems to have her mojo back in working order and is as determined as ever to put her marriage to Russell Brand behind her, having not only returned to the road this week, but officially unfollowed her estranged hubby on Twitter.

For now, of course. Considering he last updated his account on Jan. 5, it might not exactly reflect his current state of mind.

Katy, meanwhile, seems to have gotten back to embracing her Twitter page after a brief, understandable absence, tweeting just today about her excitement over the final date of her California Dreams tour this weekend.

Glad to have you back, Katy!

Katy Perry unfollows Russell Brand on Twitter