The bridesmaids are members of the bride's wedding party in a wedding. A bridesmaid is typically a young woman, and often a close friend or sister. She attends to the bride on the day of a wedding or marriage ceremony. Traditionally, bridesmaids were chosen from unwed young women of marriageable age.
The principal bridesmaid, if one is so designated, may be called the chief bridesmaid or maid of honor if she is unmarried, or the matron of honor if she is married. A junior bridesmaid is a girl who is clearly too young to be marriageable, but who is included as an honorary bridesmaid.
The above description an explanation about bridesmaid, and closely related to dress, for Bridesmaid more options to dress of wedding event, One thing must match that's his trademark, as in the following few pictures namely with some color eg Gray, Purple and Red.