I Am Honored...

Perhaps standing off to the side instead of being in full view would help. Or you could practice by going to karaoke.

Oh cool! I've sung at two weddings... once for my childhood best friend (who always said I'd sing at her wedding some day LOL!) and once for my sister. I didn't think I could do it either, to be honest. However, in both cases, I was "supposed to be" in the wedding party but was pregnant with each of my daughters. So, it seemed best to have another role for me, where I could wear what I wanted and not cause any undue stress on the brides. The first wedding, there was seating "box" behind the altar for a small choir. I sat there with the organist and just stood when it was time for me to sing. Even though I was in front of everyone, I still felt a little "protected," you know? I got through the song just fine (until I made eye contact with my dad and he was just sobbing... he had never heard me sing before and it was really emotional). At my sister's wedding, that church has a choir loft and I "thought" I'd be up there, behind the congregation and out of sight. Nope! They decided I'd sing with just a guitarist to accompany me and I had to stand at the altar in front of everyone. There I was, big as house because I was 2 weeks from delivering, and singing If you really want to sing for your sister, I encourage you to do it. You don't have to be perfect... choose a song you feel confident about. My sister wanted "To Sir With Love," at first, and I said no. It would have been too difficult, I thought. But if it's a song you know and enjoy, you'll be a LOT less afraid than you might think. Plus, it'll mean the world to your sister and you'd be doing it with love If you're really really nervous, I'm sure it would be possible to find a spot for you to sing from that would make you feel less "obvious"... they will hear your voice no matter what Good luck with your decision :))

How soon is the wedding? I'm thinking practice, practice, practice, then practice some more. Sing your heart out whenever you think of it and that will get your vocal chords toned. What songs will you be singing? I would be embarrassed if I had to sing behind a wall. I think that would be silly and quite humiliating. Just my humble opinion.

I love Barbara's answer and I can't think of anything else that would work so well. Nice of your sister to ask you to do this. I guess you got things straightened out about finances then? If she's getting married in church, sometimes they have a balcony where the choir sings...maybe you can go up there which would be behind everyone above.

There are several ways you could sing without having to get up infront of alot of people. You could do it behind a curtain. Or you could pre-record it as a gift for them. Or even video tape it. Lots of choices.

I think that there could be a decoration arranged in such a manner so that you cannot see the guests, and their view of you is obscured as well. My vision is something along the line of a wall of flowers (perhaps a cascade over one of those room divider screens?); of course, this would have to be matched on the other side of the room, so that it looks like a natural part of the decorating design.