Every polytechnic is the same.
Wearing a bra that doesn't show off your boobs under
your tank top is considered cheapskate and stingy. Not a welcomed
behaviour by your male peers.
Wear ONLY skirts. Skirts are carefree and also
ensure that you can fit into all the walking around campus under
the hot weather.The shorter the better.
Some people say you should wear nothing.
I don't recommend that. I recommend just bikini will
do.
above post is very correct and is recommended by the
authorities.