How big is C cup bra?

C cup bra size can vary depending on the brand, as sizing standards may differ slightly. However, generally speaking, a C cup bra is designed to accommodate breasts that are approximately 2 inches (5 cm) larger in circumference than the band size. For example, a 34C bra would typically fit someone with a 34-inch (86 cm) underbust measurement and a bust measurement of approximately 36 inches (91 cm).