Opt for a different bra style with more coverage, or try a wider band.
Your bra is likely a little too big, try one cup size smaller.
Spilling on the side?
First, try loosening your straps. If that doesn’t do the trick, opt for a bigger cup size.
Straps digging in?
Support should come from the band—not the straps. Loosen your straps so that they're snug but not tight. If you still feel digging, it's time to go up a cup size and down a band size.