709c592b__Bra_Size_Chart___Panty_Sizing__SOLUTION_
[PROBLEM:] Bra straps cuts in or leaves marks on shoulders. [RECOMMENDATIONS:] Choose a style with wider or padded straps. Try decreasing the bra/band size (breast support should come from the rib cage band, not the shoulders). [SOLUTION:] 
Try loosening straps slightly. If adjusting does not work, you need a bra with more support.
Lingerie Bra Size Chart - Panty Sizing
SOLUTION: