Boys are handsome (more than one boy), the boy is handsome (one boy), you are very handsome (when speaking to the person) Girls are beautiful (more than one), the girl is beautiful (one girl), you are very beautiful (when speaking to the person) There are many more for girls, cute(a fun description), gorgeous, pretty, attractive. Boys and girls can be described as 'fit' if you think they are attractive but this is a slang word.

Hi, Olivesoap For the girls you can use the adjectives "pretty", "beautiful" or "cute" For the boys you can use the adjective "handsome"

Gorgeous, pretty, foxy girls buff, chiseled, sharp, clean cut, rugged, boys fine, cute boys and girls

Teenagers describe good looking boys and girls as "hot"