Returned Brassiere

I bought a brassiere for my girlfriend, but it was a bit too small. I bought a 34D but she is a DD cup and the bra was just a bit tight. When I took it back, the sales lady told me she wears the same size and opened her blouse to show me. She had a rather nice pair of breasts in addition to a very demure tattoo. I reached out and told her she had a fine rack, but can I get a DD cup bra? She did the exchange and thanked me.

— Curt, 26