To wear this Princess Cadence costume, just put it on like a regular outfit. Make sure all the parts fit well. When you're wearing it, be careful not to pull too hard on the sequins or feathers to avoid damage. After use, gently shake off any dirt. If it gets dirty, you can hand - wash it in cold water with mild detergent. Hang it up to dry, and it'll be ready for your next adventure in Equestria.