The clasps and the front piece are flat against the chest (not against the breasts).
If the cups or the clasps are too small, the front piece will not rest against the skin and the bra will hang lose. On the other hand, the front piece should not pinch either.
How to respond?
Try a larger size if the clasps and the front piece do not hug your body or the clasps pinch.
But remember that the first thing you should always do is measure your band size.