IU updated her Twitter with a new photo on 5th August.

She said,"FIESTAR MV filming set!Cheska unnie looks adorable today,she is pretty too,charismatic!"

IU continued to comment,"is the photo appearing"i need to learn Twitter"!

She is seen holding Cheska's signature in the photo above,FIESTAR is an upcoming female group of IU's company LOEN Entertainment,IU is showing her juniors a lot of support!