When did she start fanning herself during performances?

Over the long arc of her career, I really haven't seen very much footage of her performing live, but it seems these clips have been popping up in this sub lately that feature her fanning herself mid-song, while making some kind of weird face.

It seems almost random/ doesn't really correlate with the lyrics. Is this something she always did and I just started noticing?

I don't get it!