JTBC aired a new episode of 'Ssul Jeon' on January 23 and talked about the recent trend of sexy girl groups, such as Girl's Day and AoA.

Kim Gu Ra said he watched Girl's Day's dance for "Something" and thought they were on the ground more often than they were standing.  Kang Yong Suk brought up the main point of their choreography in which they slip aside the skirt with the long slit down the side to reveal one leg.

SEE ALSO: FNC's Mistreatment: A Five-Year Battle for Cherry Bullet

Heechul gave his own thoughts on this recent trend.  He said, "Girl groups these days almost all have sexy concepts.  What became a controversy was AoA's part in their 'Miniskirt' dance when they pull up the zipper on their mini skirts.

While looking at these girl group concepts, I think that our country truthfully does not eat up cute concepts anymore.  I am a celebrity and a singer--and a product. Celebrities are a product.  Consumers need to purchase and like us."