Fashion tips from a military dictator

(A larger version can be seen here.)

I came across this interesting item at Wikipedia. It's a poster advocating how Thais should and should not have dressed during the conservative Phibulsongkhram era (1938-1945). It reads:

Thai Culture
When in communal or official places
When in public or on the street

(left side)
Do Not
Dressing in this manner is not part of Thai custom
Do not wear a sarong or expose the upper body
Do not shave your head or wear a Muslim-style hat
Do not expose the upper body or wear a shawl
Do not wear only underclothes or carry things on your head

(right side)
Thai custom entails dressing this way
Do wear international-style clothes or Thai style short trousers
Do wear a proper button-down shirt
Do wear your hair long and a clean, proper outer shirt
Everybody must wear a proper skirt