depends on my mood .. and my top ^^.
and also depending on the place i go to
... heh. here's my system
1. Always sit properly if wearing a skirt
really, i'd never embarass myself like that or
put myself on display.
2. I'm the type who's careful not to show too much skin. Very
paiseh
...
As in, spaghetti top and jeans, T-shirt and miniskirt. Jacket or
coat always comes in handy too 
besides .. it's creepier to pass by one area of the Boon Lay
Interchange.
3. Areas: Usually places with more teens it's easier to be more
comfortable .. places with more lao tikos is a huge no-no when it
comes to certain clothing. 