Before you make your annual trek to Old Navy to buy your patriotic apparel, you might want to read this. It's technically not patriotic to wear the flag on your clothes. 

Or is it?  It might depend on your perspective and interpretation. The U.S. Flag Code says you're not supposed to sell or display anything that has an image of the flag on it for advertising purposes.

The Flag Code isn't enforceable by law.  There's no flag police.  But it's the official guideline for how people are supposed to treat the flag.  You might think you're being patriotic by wearing it on your shirt, but the Flag Code says it's disrespectful.

Who knew? I didn't.

I can't help but wonder if intent should be considered as well as some common sense. Is the person wearing the clothing in a manner that is disrespectful, or are they wearing it to show their American pride?   Use your best judgement.  I think that most Americans would consider a print of the American Flag on a T-shirt patriotic.  Wouldn't you?  I draw the line at underwear.

AARP.org