Girl group Stellar is under some heat at the moment as some people are deeming their recently released 'Marionette' MV a bit too provocative and over-the-top sexy.

In relation to this, member Gayoung took to Twitter to show fans that she was doing fine. She wrote, "Do not worry. �I am okay. �Thanks to all of you, I have more than enough strength and happiness. �I will do my best. �Hope you have a good day! �Thank you, I'm sorry, and I love you."

SEE ALSO: Stellar receive flak for their provocative concept + 'Oppa! I'll Do Whatever You Want Me To Do' Facebook promotion events

You can watch the girls' first performance on Mnet's 'M! �Countdown' tomorrow!