Don’t know your bra size? Join the club. There’s a deep confusion in the market place over bra sizing and how to measure your bra size. While it shouldn’t be complicated, it feels like lingerie shopping is an endless maze that customers are left to decode without resources. Bra sizes aren’t standard; some brands use the Small to Extra Large size range, while others adopt cup- and band-sizing. And the process of how to measure for a bra is ever-changing. While in-person bra fittings come highly recommended, you can now go the digital route, downloading an app to calculate your bra size from the comfort of your home. As convenient as that sounds, is it the best option? And how can you guarantee that the fitting results are accurate? It’s also hard to determine the bra cup sizes that best work with the shape of your breasts. A bra cup size chart, for example, might not be able to tell you which style works best for shallow-top, East-West, or pendulous breasts.

If all these problems sound quite familiar, and you’re still left wondering how to measure your bra size, we do have a solution: go to the experts. We spoke to bra guru, Miryha Fantegrossi, Wacoal’s SVP Merchandising and Design, about several bra issues and questions. Fantegrossi walked us through everything from the benefits of a bra fitting to the best bras according to breast shape. We even discussed tips for cleaning your bra and when it’s time to get rid of it altogether.

In a world of seamless, underwire, demi cup, padded, bralettes, strapless and beyond, here’s how do you determine the best bra for your breast shape and find your perfect fit. And keep scrolling for solutions to common bra-fit issues, courtesy of lingerie expert Jenny Altman.

Additional Reporting by Lara Eurdolian