Girl group T-ARA member, Jiyeon pulls a joke on singer IU.

IU posted a picture of Jiyeon picking the nose of IU in her Japan Tour debut poster.

Along with the picture, she wrote, "Jiyeon who helps me pick my nose in Japan."

Also IU shared a picture of Jiyeon sleeping saying "She always wakes me up in the middle of the night and then goes back to sleep. Happy Birthday!"

Jiyeon also posted a photo shopped picture of IU. Her chin and cheeks are grossly chubby and wrote, "You should gain some weight. You look so much better this way."

Both singers are the same age and good friends and through twitter have been showing off their close friendship.