Where to Find 28C Bras (And Why They're Rare in Stores)
Sub-30 band sizes like 28C are notoriously difficult to find in typical brick-and-mortar stores because most mainstream brands start their sizing at a 32 band. This means the 28C market is served almost entirely by specialty brands and online retailers.
Brands that reliably produce 28C include Panache, Freya, The Little Bra Company, and Comexim. These specialty manufacturers focus on extended sizing and often use narrower wires and closer-set straps that work well for smaller ribcages. You can find their 28C offerings on sites like Bravissimo, Bare Necessities, Breakout Bras, and Amazon.
When shopping online, always check the return policy before purchasing, as fit can vary between brands even within the same size. Many of these retailers offer virtual fitting consultations that can help you zero in on the right 28C style for your shape.