Help with what to wear with formal dress?

Hi

I am attending my brothers wedding in a few weeks wearing this, with little black straps


http://i.ebayimg.com/10/!BkqoBR!Bmk~$(KGrHqYH-EIEs+1oO+MRBLYe!RkcSw~~_35.JPG

http://i.ebayimg.com/19/!BkqoC3QB2k~$(KGrHqMH-EUEs9E6Mub,BLYe!Vq!rQ~~_35.JPG

http://i.ebayimg.com/24/!BkqoERgBWk~$(KGrHqEH-EEEs92wUJf)BLYe!Y8bBw~~_35.JPG



Sorry I couldnt post pic - it wont work for me! I hope this works

I have a black wrap I could wear but to be honest, I don't feel very comfortable carrying them. I don'd mind being cold, as long as I don't look it!

Does anyone have any other suggestions?

Thanks a lot!
 
Is the wedding outside? In cold temperature? Do you have to cover your shoulders at the service? Is there any way you could put the coat or wrap at a coat check or over your seat after you arrive?

Very pretty dress btw.