Is a size 28D almost 28DD bra small for a 16-year-old? - Quora
Lydia Hix Finds Her Bra Size: 28DD - YouTube
Buy Size 28DD Bras and Swimwear | Storm in a D Cup AUS
28DD Bra Size by Panache Bras
Guide] UK/US 28DD (EU 60E) - Comparison of 20 popular bras + which bras have narrow, projected cups and which bras have shallow, wide cups. Link to full guide in comments : r/ABraThatFits