From the beginning of the year, there was a battle of the 'sexy' for girl groups.

The first was Girl's Day with their song, 'Something.' With the producer of the song 'Give it to me' of Sistar, Girl's Day succeeded with this song and swept the charts immediately with their sexy floor sweeping dance.

Dal Shabet also joined the race with their non-revealing sexy song 'B.B.B.' They had teasers in bathtubs and sexy gestures and faces in their videos.

An adult-rated unit group came next from Rainbow as Rainbow Blaxx. They focused on revealing parts and even made an adult-only version of their song 'Cha Cha.'

Starting as a girl band, AOA also changed their image from band to sexy. Their song, 'Mini Skirt'  showed off their legs as well as their 'wave butt' dance.

Stella topped off the sexy videos with their almost-erotic music video Marionette. In this MV, the choreography as well as their outfits were extremely sexual, topping the search engine sites instantly.

However, the too-much dances and outfits were changed instantly for the viewers of TV. They had to change their outfits and choreography to suit all ages.

The battle still continues on with Secret Hyo Sung, Tara Ji Yeon, and G.Na.

But their songs have not had as much of an impact as the beginning of the year.