So apparently you need to be very careful when photographing yourself in bras. I took a few photos with my mac camera for bradatabase reviews (some of those photos are here, too), but had to sit in a weird position that managed to make a fairly loose band look as though it was about 3 sizes too small.
While the second shot is terrible quality (and shows very little of the bra), it does illustrate the difference that an odd posture/angle can make. The second image is how the band ACTUALLY fits… the first picture makes it look like it’s snapping me in half.
My next step? Finding someone to photograph me so I don’t have to resort to weird postures/angles. :)