Clothing- boys and Jrs girls (Plymouth)

Hello all I am in need of summer clothes (if we actually receive a summer for real lol), I have a 9 yr old son in need of summer clothing shorts, tshirts and some swimming trunks if anything may be out there. I also have a tall husky 11yr old she isn’t the average 11yr old she wears a 13 in jrs from Walmart and a medium/large from other places so it’s a bit tough for this one. Anything helps.