Psst...Want to know a little girl group secret? Beware because some of you may be devastated.

Some of what you see girl group members showing off on stage is actually fake. During MBC's 'Quiz to Change to World', Rainbow's Woori revealed, "There are probably a lot of girl group members who do the same thing. To be honest, I find it difficult to form abs, so I draw them in before I go on stage."

Funnily, Woori previously received attention for her abs during promotions for Rainbow's song "A" when the girls lifted up their shirts a bit for the choreography. Considering this, fans were shocked by her confession.

Park Eun Ji also revealed on the show, "My collarbone isn't very visible, so in order to define it, I draw in a collarbone whenever I wear a dress." Kim Joon Hee responded, "I wasn't aware of this trick, so I exercised really hard. Thanks for teaching me a good method."

Fan boys (and girls), are you okay?