This is a rant.
I don't normally buy bras at VS, but I got a gift card for Christmas. I went and was fitted as a 34C. They were comfortable in the store, but once I got home and moved around, I couldn't get the straps to stay. So I went back and the next salesperson fit me as a 32DD (WTF!). The bra provided great coverage and the straps were comfortable. Went home and moved around and the wire was just DIGGING into me. Went back a third flipping time and the next salesperson fit me in a 34B. When I objected, she insisted it was the right size.
I finally asked to speak to the manager to explain my frustration. The manager insisted on fitting me and fit me as a 32D. I tried on 6 different bras and none of them fit me... Finally she admitted that maybe VS bras just don't fit me.
So yup, now after 3 trips and 3 hours, I know that I either wear a 34B, 34C, 32D or 32DD. And I still don't have new bras.