The Perfect Fit
How your bra should look.
If your bra is riding up
Check the back of your bra. If it rides up, the bra is too big around the body. Try a smaller size.
If your bra cup feels uncomfortable
The bra side seam or underwire should sit at the underarm. If it sits too far forward into bust tissue then the cup is too small. Try a larger cup size. If the side seam sits too far back into the armpit, try a smaller cup size.
If your bra does not sit flat
If the bra sits out at the centre front and does not sit flat against the chest, the cup size is too small. Try a larger cup size.