I have a "champagne" coloured floor-lengthed prom dress, not sure what colour bag and shoes to have?

get red shoes and a red clutch. my friend has the exact same color of dress for homecoming and even though prom is a lot more formal the red would keep the elegance you are trying to maintain...or maybe you could go with like...a dark turquoise? but I think the red would look REALLLLLLY GOOD!!! and itd compliment your hair too