There are many incredibly talented bra, lingerie and swimsuit designers and makers who have published their own books and or maintain a you tube instructional channel. They post rich, reliable content and they have been teaching a whole new generation of lingerie makers.

Bare Essentials: Bras by Jennifer Lynn Matthews-Fairbanks

Pattern Cutting for Lingerie, Beachwear and Leisurewear by Ann Haggar

The Anatomy of the Bra and How To Be A Lingerie Designer both by Laurie van Jonsson

The Bra-Makers Manual by Beverly Johnson

Demystifying Bra Fitting & Construction by Norma Loehr

Patternmaking for Underwear Design by Kristina Shin, Ph.D

Sewing Youtube tutorials and channels:

The Fold Line's 10 swimsuit pattern review:

Sew a Bandeau Chest Binder:

Men's Underwear: