why right breast bigger than left
Report Abuse. yes its normal. usually if youre right handed youre right breast is bigger cause the muscles in your arm, shoulder...etc are more developed (and viceversa for lefties) . my right breast is slightly bigger than my left and im nearly 18 too.sarapindity Â· 9 years ago.eport Abuse. yes its normal. usually if youre right handed youre right breast is bigger cause the muscles in your arm, shoulder...etc are more developed (and viceversa for lefties) . my right breast is slightly bigger than my left and im nearly 18 too. sarapindity Â· 9 years ago.