What Should the Mother of the Bride Wear? The Groom's Mother?

Mothers of the bride and groom aren't restricted in terms of
fashion but should let the season, hour, and formality of the wedding -- as well as their own tastes -- guide their
choices. Some brides ask that the mothers coordinate their
attire with the wedding colors, but it isn’t mandatory; it also isn’t mandatory to adhere to the gown or dress length of the bridal party (or even each other), regardless of the wedding’s formality. One long-standing rule is that neither mother should wear a shade that closely resembles (or is the same) as the bride’s, so ivory, cream, or white fabrics should be avoided. For the most part, the mothers of the bride and groom should simply choose a
design, color, and fabric that flatters their individual figures and is appropriate for the formality of the wedding.
Steering clear of anything with too much flash or shine or that might upstage the bride is a good rule to follow, as is avoiding too much exposed skin. A sleeveless sheath with a removable jacket, a floor-length gown with a matching shawl, or a beautiful suit in luxurious fabric are all tasteful and dignified choices that aren’t considered staid in the least.
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