Girls' Day is getting very popular right now, and they seemed to have a signature move to get fans to notice them more often too. That is, they seem to be flashing their panties in public. On purpose. It also seems like this is a recurring move too.

Are they doing it on purpose?

Or is the fabric on the skirt making them itch?

All of them itch.

Pretty sure this was deliberate:

NO ONE does this:

Or this:

Their performances are no different.

It's open-wide for all to see.

NBD, right?

It's just some panties..?

So seriously, are they doing it on purpose?

Is that why they're so damn famous now?

Of course, they're not the only ones who have caught up on this trend. This is Grade 7 Class 1: