My only sister is 13 and will be a junior bridesmaid in my wedding this coming May. While she's excited, she's also feeling a little slighted that she is "just walking down the aisle and standing up front." My fiancé also has a sister (23) who is a professional singer, so in addition to being a bridesmaid she will also sing a few songs during the prelude. So, I'm looking for additional ways to make my sister feel like she has an important role, beyond "just" being a bridesmaid. We're not having an readings during the ceremony that she could do, and she's already made it clear she doesn't want to be in charge of the guest book/gift table/etc.
There will also be a shower before the wedding as well as a farewell brunch for out of town family, so I'm also open to ideas that would get her involved at those events. Any help would be much appreciated!