Mardi Gras is renowned for its creative costumes that include masks, feathers, hats, wigs and beads. Halloween is also a day to dress up and enjoy. So wearing a Mardi Gras costume to a costume party makes perfect sense. You can experiment with your look but remember to add a lot of beads and sequins. The more creative you are, the better the Mardi Gras costume will look. Be sure to get noticed in a group with the yellow, green and purple costumes. Warn your friends and tell them to be ready for an eye popping costume and present yourself.