Brown Eyed Girls released teaser photos for their adult-only concert "Tonight 37.2°C" scheduled for Dec. 24 and 25.

The title refers to the body temperature reached when making love. It is the first adult-only concert by a girl band in Korea.

Nega Network, the band's agency, unveiled raunchy photos from the teaser video for the concert on Thursday, as well as highlights of a promotional video on major social networking sites.

Tickets will be sold at Interpark for W110,000.