Something loose or dupatta does not cover the bulkiness or multidirectional moves (of your boobs) whenever you move your arms around or even take a step....:-) ..... You do whatever u like....I m just saying.....
I have an elderly over weight professor who just sits on top of a desk ....in front of u for 4 hrs straight.. Shukar hai, tomorrow is the last day to go through this torture.
Ladies i haven't bothered reading the whole thread but ive always been told its very important - our grandmothers who never bothered with good bras (they weren't really the thing to do back then) are a fantastic example of how saggy one can get without them!
Better to be safe than sorry!
Oh and one other thing, make sure you're wearing the correct size otherwise you will notice problems with your back!
ohhh one last thing - no bra/ill fitting bra looks kinda un-sightly and can put the best of outfits off and out of sync so another reason to stick with them and well fitting ones at that!