Are Shorts and T-shirt...Underwear?

I don't know why I'm so excited for my Myanmar trip... I was reading some review on the do's and don't when visiting Myanmar. I heard from few of my friends whom been to Myanmar before... they told me it's important to be sensitive on the dress-code.

To the people of Myanmar, shorts and T-shirt consider underwear... yes~ It's written in quite a number of articles. Hmmm... seems like it's the same as Iran. When i was in Iran, shorts and T-shirts are underwear too. We are not suppose to wear shorts out of the room. So we could only wear jeans or long pants outside our hotel room. This is for guys... Ladies has another set of dress-code.

Anyway, let's go back to Myanmar, the people of Myanmar is wearing their traditional clothing... Guys are wearing like the picture below...

Picture from nanhommaoaye.files.wordpress.com

Oops, don't think i will wear this... Not get use to this outfit. Anyway, i just make sure i'm not going to wear shorts for visiting in Myanmar.

Anyone been to Myanmar and can share with me what else i need to take care?