Let the hunt begin

As I've mentioned before my little brother is getting married in August and his wedding color is going to be light green (I'm thinking they may use light yellow as an accent since a green bouquet may be tricky to pull off). So this means I have three months to find a completely fabulous outfit for the occasion. (I may also be pulling for yellow because Baby G has the cutest yellow dress.)
Here is my first option
Image this skirt with a be-ruffled white cami and a white cardigan with elbow sleeves. I would throw on a skinny yellow belt and wear some black high heels. The upside to this outfit is that my upper arms would be fully covered, a good thing for everyone concerned.
Ok, option two
I realize this looks super casual in the pic but its a little fancy with its silky top and it was super super flattering. I'd wear dangling earrings and a bling-y bracelet and nude peep toe heels with little flowers on the toes. Downside my arms would be visible :[
Option three
I'd have to figure out some sort of jacket/cardigan option and this could be a little too fancy for a summer afternoon wedding. This is my preliminary search so if you see any great light green outfits let me know. Light green is a little more difficult to find then you may think and I'm not sure about the level of fancy I need. I'll have a better idea once I see what me mother is wearing. She had a miracle shopping moment and walked into a store and found exactly what she wanted! My mother in law is coming to watch Grace on Friday so John and I are going to hit the stores then, he is totally excited.