The history of bridesmaids allegedly goes all the way back to the bible and the story of Jacob. His two wives Leah and Rachel literally came with maids as staff. The tradition of wearing the same dresses is just as ancient being a practice to try to trick any jealous parties or confuse evil spirits!
In particularly more brutal times healthy brides were valuable commodities and being kidnapped during a wedding was not unheard of in places like tribal China. This resulted in maids wearing the same clothing as the bride to confuse and help her not be identified amongst the congregation.
Luckily nowadays bridesmaid play a more ceremonial role rather than being expendable body doubles! Instead of being servants, bridesmaids are also now friends of the bride performing a similar role as ushers, but for the brides side of guests.
Bridesmaids also play a vital role of organising the hen weekend
and on the 25th March they are at their busiest planning out the last weekend of freedom for the bride.