Liaise with the bridesmaids and/or their mothers (if applicable) to ensure colour and style co-ordination.
Discuss whether their outfits will be purchased, hired or specially made and who will pay.
Agree on a suitable, taking into account the personality, proportions, height and figure of each one (accentuate good points and minimise the rest)
length and shape of dress
sleeves (depending on the time of year)
trimmings and decoration
fabric (depending on the time of year)
Agree on the colour, taking into account the colour hair and complexion of each bridesmaid