A. You can absolutely wear this dress in the fall. Without knowing how dressy the wedding is that you are invited to, we would suggest a dressy cardigan or jacket in black or silver. Below are some pretty beaded and sequined options that might work for your navy blue dress. If you opt for the black/navy combination (a very chic look by the way), then wear black heels and bare legs or black sheer hose. Silver heels are also an option.