Tomima Edmark explains how the bra fitting system works, it's flaws and demonstrates how does the system work and where does it fail comparing two models sized 34B and 36DD.

This store opened in 2001, they focus on hard-to-find sizes and styles of intimate apparel.

Their web store has a spanish section.

According to their site

Sick of the neverending quest to find a good strapless bra, we put together a diverse panel of ladies (the examiners) to test every strapless bra we could find so that we could bring you only the best strapless bras...

Also known as JMS

Contains information to help girls understand their developing body and in the search of their first bra.

Bra Smyth is part of a 3-generation family business that started in New York by my grandfather over 70 years ago. Today, we are a multi-channel retail company with a flagship retail store on Madison Avenue in New York City, a nationally distributed print catalog and active e-commerce site.

An interesting bra fitting service at Isabella Lingerie Shopping.

Submit a couple of pictures of you wearing a bra and the Boobologist should tell you your true bra size!

Southern California native Emily Lau has combined her love of lingerie and need for cleavage to create THE LITTLE BRA COMPANY—a brand that celebrates the fact that good things do come in small packages.

Professional Bra fitters

With over 30 years experience in the business, Bra*Tenders provides women's and men's undergarments, hosiery, and specialty items to wardrobe and costume design professionals of stage, screen, and television.

British Lace is a bra store, which also has an interesting measuring form that you can send in and request to be fitted by them.

Lots of bravissimo easy to follow tips on bra wearing, how to choose the right size and style.

Ruth Addicott writes about her experiences being fitted "professionally" and talks about how drastically bra sizing changes between brands and fitters.