Russian pop duo T.A.T.U. has split again due to creative differences.

Earlier this month (Feb14), Julia Volkova and Lena Katina reunited to perform at the Winter Olympics Opening Ceremony in Sochi, Russia, and stood hand-in-hand while singing their 2003 hit Not Gonna Get Us.

Following the show, the singers announced they would be releasing new music and performing more live gigs in the near future.

However, Katina has now revealed they will no longer be moving forward with their plans because of disagreements between her and Volkova.

In a Facebook.com post, she writes, "For the reason of incorrect behavior (sic) from Julia's side concerning me, I must announce that our future collaboration has become absolutely impossible. Aside from many crude and hurtful statements made about me, Julia gave me an ultimatum: she declined to participate with me in t.A.T.u. if I do not comply with her and her team in all aspects regarding the creative direction of t.A.T.u...

"In this instance I consider our future collaboration to be impossible as well as communication between us. I am sad that our fans' hopes of a t.A.T.u. reunion will not come true. I hope you understand and I want to say thank you for loving and supporting me always. Thank you."

Volkova and Katina split in 2011, but reunited a year later for a series of concerts and Tv appearances.