Wearing an unlined, non-padded bra (not over your clothes ... On the chart below, you'll see a 3 is equal to a C cup, meaning your bra size is 34C. No measuring tape? No problem!

Eventually, she finds me a slightly padded nude plunge bra (£26) in size 34DD which she declares fits me perfectly. Then she disappears and doesn't come back. I don't buy it - already own ...

Most cup sizes need a bra that will fit snugly against the chest ... have two boobs under a shirt,” she says. The straps are padded, and thanks to the uniquely curved stitching, the bra has ...