* Online retailers: Many online retailers sell ballet costumes, including major retailers like Amazon and Target, as well as specialty dancewear stores. When shopping online, be sure to read the reviews carefully to ensure that you are getting a quality costume.
* Thrift stores: Thrift stores sometimes have ballet costumes for sale, especially during the off-season. This can be a great option if you are on a budget.
* Make your own: If you have some sewing skills, you can make your own ballet costume. There are many patterns available online and in craft stores.