Congratulations, it can be fun doing a bridal party.
I would suggest finding out if there is a theme to the wedding,
ie: is it a summer theme or winter theme, maybe they are doing a old english theme or is it an upmarket wedding.
Also is there a specific colour that is going to be worn by the bridesmaids that you could include in some way on the brides nails.
Maybe ask about the dress, what style is it.
One of my clients asked me to come up with something different for her nails for her big day. I knew that she was going to have this winter white (fake) fur cape, so I did a set of clear tips and airbrushed the free edge to zone 2 in a tranparent blue fade with delicate white flowers (handpainted) through the blue. (Sorry no pics)
If you don't have an airbrush maybe you could do a colour fade at the free edge in coloured acrylic.
Be sure that it is elegant but simple as you don't want to detract from the wedding ring
Hope this gives you some ideas.
Cheers
Sheryl