Wear loose, comfortable clothing to your next massage appointment. This will help you continue to feel relaxed after your massage and make the process of undressing easier prior to your massage.
Wearing many layers with lots of buttons and zippers is probably not the best option. Instead, try your favorite t-shirt with yoga pants or comfortable sweats.
If you are coming straight from work, pack a bag and bring something comfortable to slip into. Struggling back into a suit or uncomfortable shoes after a massage is a quick way to reduce the relaxation benefits of massage.