Bridal authority, how far should it go?

[IncontRHOllable]

Hey Sorors/Sistergreeks. I had an interesting conversation with a bride to be and I thought I'd post it here and see what you think. If you are a bridesmaid, maid of honor, etc., and the bride told you that she wants "her girls" to wear their hair in a bun with spiral curls but your hair is in a funky short cut so you can't really wear that unless you pay for a weave, do you wear your hair in the style the bride picked or do you risk upsetting the bride by wearing your own style? The same question applies for the dresses. Say its your BF that's getting married and she picks out a dress for you that is less than flattering to your figure. Do you go with her decision and wear the dress that's less than flattering for you or do you try to change her mind by looking at other dress options?