When I go around the city to explore this "land of smile", I always wear simple and comfy outfits. I can't be in any crazy fashion given the heat; boy, it's terribly hot in here. Since I tend to sweat a lot under the sun, I always choose to wear anything white. That way, i don't trap too much heat.
I and my boyfriend took a cruise, a package worth 150baht each for seven ferry stations that lead to seven tourist spots.
This is one of those comfy outfits I easily pull out if I were to go around. Also, expect my footwear to be sporty tennis or rubber shoes.
Due to one fashionista's comment, I decided I have to mention this: If you are planning to visit the grand palace, make sure to wear something decent. No sleeveless tops, no minis and no slippers. Otherwise, you won't be allowed to enter the palace. :)