Mine show thru like t shirts, polos, light weight sweatshirts, some dress shirts without breast pockets. I even with a t-shirt on under dress there are times I show. I don't mind them showing, I worked to get them sticking out, and just recently got them pierced so sure they show quite well now. I do not make it a habit to check myself out in the mirror. I admit I enjoy seeing an impressive deck of pecs on guys with thier nip location noticable. If I really like it and I feel the gentleman will appreciate it I give him a compliment while walking by at certain times. That just blew one guy away when I did it to him in a store, he showed a grin and his eyes just lit up, and he actually thanked me for noticing and the compliment.