T-Shirt Bras are moulded bras with no seams, these bras are great for wearing underneath tight tops and preventing nipple show. - Moulded, and without seams, this is ideal for t-shirts as the extra padding ensures no nipple-show. - Moulded bras are great for all sizes, as they will not add to your size, even if your breasts are large, but will give great support and shape. - Ideal for wearing under tight tops too, as no seams will show through your clothes. - Ensure you are wearing the right size, otherwise your breasts may spill out of the top of the cups, ruining your look.