Superboy comes from another plane of existence where people don't wear t-shirts - they wear tank tops. In this tipsy-turvy world some heroes are bad, while some villains are good; but no one dares to wear a t-shirt. Mainly because in that dimension everybody has access to phenomenal selections of tank tops, like this red outline S symbol on black!
Superboy always did have a problem with recognition. Made from 100% cotton!

