You’ll want to look for a dress that blends with the bride’s chosen colors. Most moms use the bridesmaids dresses as a palette. If their mother of the bride dresses knee length are green, you shouldn’t choose a pink dress. A different shade of green or even a dress in a complementary shade of blue would be a better choice. You want to avoid white, ivory, black, red, anything too bright (like an electric-blue gown), and anything too overdone.
Although black is becoming more acceptable for MOBs and guests alike to wear to weddings, ask yourself whether you want to be under scrutiny for the color of your chic new dress (because no matter how progressive the fashion world is becoming, MOBs who wear black are always suspected of harboring some ill will toward the union) or would rather have guests compliment you for how you look in a more traditional dress.
If you don’t have choices of mother of the bride dresses, here are some suggestions: