Generally, different dance forms require you to have different attires. For example, practising ballet requires you to wear tutus and ballet shoes. However, salsa dance requires you to wear heels. Therefore, it’s best to see which dance form you’re planning to learn before you buy your dance clothing and shoes. Wear something similar to the original attires while practising. This way, you’ll have enough practise before your actual competition. And yes, in the end, all the attires and shoes should fit you perfectly and comfortably.