Proper Islamic Clothing for Boys
There are similar, yet less obvious requirements for a Muslim male's attire, then there is for the female.
What to cover:
He must always be covered from the navel to the knees.
What not to wear:
A Muslim man should similarily not wear tight, sheer, revealing, or eye-catching clothing. The prohibitions against wearing clothing of the opposite sex or distinctive clothing of other faiths is also the same. In addition, a Muslim man is prohibited from wearing silk clothing (except for medical reasons) or gold jewelry.
The Prophet (peace be upon him) said: Wearing silk and gold has been made unlawful for the males of my Ummah and lawful for their females.
Yahya said that he heard Malik say, "I disapprove of youths wearing any gold because I heard that the Messenger of Allah, may Allah bless him and grant him peace, forbade wearing gold rings, and I disapprove of it for males old or young."
The Prophet forbade us to drink out of gold and silver vessels, or eat in it, and also forbade the wearing ofsilk.