Bra Fit Tools: Feel the difference of the perfect fit as it conforms to your unique figure. It's easy to find the most comfortable bra with the best fit with our Bra Fit Tools. The Bra Fit Calculator shows how to measure and the Bra Glossary helps find the right style. Or attend one of our in-store fit events. With the help of the Bra Fit Tools, it's easy to find the right fit at the right price at JCPenney.