Guys and gals, what do you think of ladies who puts on make-up in public places like on a crowded mrt, or at the coffee shops?

I just saw one this morning, not the first time though. This lady (who was seated) whipped out her make-up bag, held up her mirror in one hand, while the other held the eye-lash curler to curl her lashes. Then she applied foundation, eye shadow, powder, curled her eyelashes somemore with mascara, then maybe finish with lipstick - all to the oblivion of the half-squash people crowded inside the mrt.
It used to be that proper etiquette dictates that real ladies will not do their private things in public, but maybe times have changed, since life is moving too fast and we're always short of time? What if it's your gf or wife who does it?