Shirley B.

About Shirley B.

Shirley B. (known online as @_shirleyb_) is an American fitness model, content creator, online personal trainer, and digital entrepreneur. She is widely recognized for sharing her inspiring physical transformation journey as a mother, documenting how she overcame difficulties gaining healthy muscle mass to build a strong, confident physique.

Shirley monetizes her growing platform through digital training challenges and high-profile athletic sponsorships:
• The Burn & Build Challenge: Her flagship 4-week digital fitness program. It offers home and gym workout splits alongside nutrition and custom meal plans aimed at sustainable body recomposition.
• Build a Shelf With Me: Her specialized program focused on progressive overload, lower body muscle development, and glute/leg growth.
• Gymshark: She is an official athlete and sponsor for the global activewear brand Gymshark, frequently promoting their apparel with her custom discount code SHIRLEY.
• Alani Nu: She partners as an official brand ambassador for the popular wellness and energy supplement company.
• Baby B by Shirley: She has expanded into entrepreneurial ventures outside of fitness, launching a small clothing and lifestyle line called A Stitch of Paisley geared toward mothers and children.

She is a proud mother of two children (a boy and a girl), frequently sharing content centered around building long-term fitness habits as a busy mother.