A perfect-fitting bra will stay in its place as you move around. When trying on new bras, take time to lean over, sit down, etc. to ensure the bra continues to cup your breasts firmly as you move. If you need to adjust your breasts into the bra after moving, it’s not the right fit. The bra straps should rest firmly on your shoulders, without falling off or digging into your shoulders. Of course, you can tighten the straps to help them stay in place. However, if you start get a gap in the bra cup after tightening the straps, it’s not the right size bra. If the straps dig into your shoulders, you likely need a bigger size. The bra band will rest evenly on your back as this provides utmost support. A bra band that stays in place helps carry the weight of your bust. The bra isn’t a good fit if the bra band rides up on your back, as it’s no longer being supportive. The right bra will leave no extra space in the bra cups. Whether you’re sitting, standing or bending over, there shouldn’t be a gap between your boobs and the cups. Ideally, you should be able to wear the bra fastenedcomfortably on the last or second hook. The reason for this is because, as the bra ages and stretches, you can fasten it on tighter hooks for a better fit. Buying a bra that fits well on the tightest hook doesn’t leave you any room to tighten it as it gets worn out. The center panel of the bra between the cups (also called the gore) should rest on your chest between your boobs – not on your boobs. The bra’s band or underwire should rest comfortable on your breast bone – again, not on your boobs. A bra that fits perfectly won’t force your breast tissue to spill over the cups. A little side boob is normal, especially if you have bigger boobs or aren’t wearing a full-cup bra. However, bulging out of the cups from any side is a sign the bra is too small. Most importantly, a perfect-fitting bra will always be comfortable. You won’t have shoulder, back or breast pain because the bra fits and hugs your body in the right places. If you love the bra, but it just seems a little off, it probably is. Try a different size or maybe even a different bra style to find the most comfortable fit.