Choosing the steampunk theme for a wedding is rather daring in itself, so choosing an outfit don’t hesitate to wear almost crazy things! I think that a steampunk bridesmaid’ outfit is something really creative.
Not sure it's Steampunk but perhaps the books were already torn apart from being read so much as someone's favorite book and they just didn't want to throw away the spines and such. That would be acceptable.
16 Alluring Steampunk Wedding Dresses That You'll Adore