Avoid stores that carry a limited range. A fitter at one of these shops might try to incorrectly sell you a size that they have on-hand, instead of your true size. Before you commit to a fitting, make sure the store carries smaller band sizes (such as 28 and 30) and larger cups (DDD and up). Good choices in the US include department stores like Nordstrom and Dillard's.
When we talked to model, actress, and entrepreneur Amber Rose about the things she can’t live without, she told us a story about going underwear shopping: “So my friend Chyna, we were at Neiman’s the other day, and I was picking out some La Perla underwear,” said Rose. “They were like $120, and Chyna is like, ‘What the hell are you doing? Why are you buying such expensive underwear?’ And I was like, ‘Girl this is going to change your life,’ so I bought her a pair.” If you’re on the fence about splurging on pair of underwear, Rose makes a compelling case for doing so. “I know this sounds crazy, but wearing expensive underwear under your clothes gives you a certain type of confidence in a really cool way.”