Girl group SISTAR's Soyoo was caught on camera on the streets of Gangnam, Seoul with the rapper Mad Clown, catching much attention.

Today, Soyoo's agency said, "Soyoo met with Mad Clown to record for a duet song, and the pictures were taken by their fans."

Yesterday, many pictures of them two walking on the street were posted online under "SISTAR Soyoo and Mad Clown, love is in the air?" The pictures were spread quickly, arousing curiosity about what their occasion for meeting was.

Photo Credit: Online Community