Girl group Rainbow revealed a 'missing top' picture, gaining much attention.

Today they wrote on twitter, "Rainbow lost their tops," along with a picture.

In the picture, the top half of the group's bodies are covered with a huge curtain with the words 'rainbow' written on it.

The message, 'Tell me?!' was also revealed, gaining much attention from fans.

This picture was seen as a teaser to their upcoming comeback.

They will be making a comeback sometime in February after a 1 year and 8 month hiatus.