Gals, I need help. I have to go to a wedding on Saturday, but I can't decide which dress to wear. Here are the details: afternoon wedding in Laughlin, NV, on a yacht. No details on how formal it will be, so I assume semi-formal since it's an afternoon wedding? The reception afterwards will be cocktails and appetizers only (no dinner). I'd like to wear these pewter heels and matching clutch. Here are my choices: 1) Deborah Sweeney one-shoulder dress: Dress is a faded black with bird print. Does it match with pewter? Is it too casual for a wedding? 2) BCBG bubble-hem dress: Not sure if brown goes with pewter. 3) Lewis Cho silk dress: is black appropriate for an afternoon wedding? Also, it's probably going to be 90 degrees in Laughlin, so I might be dying in the high neck and sleeves, but then again, I don't know if it's cooler on the water. 4) Gap party dress: This is the "safe" outfit, but is it too girly? Any suggestions would be appreciated. Thanks, all!