How do I find my bra size?

Wondering how to determine bra size or how to know my bra size? Finding your accurate bra size is the first step to experiencing true comfort and support.

Your bra size consists of two measurements: your band size and your cup size. You can typically measure your band size by wrapping a tape measure snugly around your rib cage, directly under your bust. For your cup size, measure around the fullest part of your bust.

At Thirdlove, we believe everyone deserves a perfect fit. That's why we've developed our innovative Fit Finder® quiz. This online tool asks a series of simple questions about your current bras and fit preferences to help you discover your ideal Thirdlove size, including our half-cup sizes. You can also refer to our detailed bra size chart for guidance.