Wedding *corsage* perhaps? Wrist or shoulder? A shoulder corsage could add the sparkle I want if the dress won't. Should the shoulder corsage replace the hair thing with the veil? Or, perhaps, a simple hair thing with veil and shoulder corsage on the opposite side? So many questions remain unanswered.
Grandmothers tend to prefer pin corsages to wrist, but there's no set rule for what they can wear. It's most important that your special family members and guests be comfortable. Also, consider their attire. Jackets and long-sleeved outfits tend to do better with pin corsages.