it's not very rare actually. i also often get to see gals's
nipple shape cos they dont wear bra.
CNY when i went to cruise, i was playing in casino and saw a group
of gal walking around, one of them never wear bra, so that i could
see the two thing popping out, and from their wet hair, i think
they just finished swimming, after bathing come down casino.
Those sleeveless quite easy to see in MRT/Bus.
i think easiest way to see gals zaogeng is any place that sell
female shoes.
i seen many times in such places. Either it's the sales gal bend
down/squand down infront of you to give you or your gf the shoes,
if she wear polo tee or shirt with a few buttons off, easy to see.
Or it's those gals who try shoes without sitting down, they just
bend down like 90degree to take of their shoes and try the new
one.