F Cup Bras

F cup is where brand-to-brand naming really starts to diverge — some label it F, others FF, and the same body can end up mis-sized simply because of which chart a shop happens to use. Our F cup range is sized to genuine UK F, not a relabelled DDD import.

Sizing note

An F cup means roughly a 7-inch difference between your bust and underbust measurement. At this size, band width and strap placement start to matter as much as the cup itself — a narrow band undoes a well-fitted cup fast. Our bra fitting guide covers both properly.

Frequently asked questions

Is F cup the same as FF?

Not quite — FF sits one size above F in the UK system. If F feels slightly small at the cup but the band is right, FF is worth trying next.

Why does band width matter more at F cup?

A narrow or under-reinforced band can't properly anchor a fuller cup, however well the cup itself fits — our styles use wider, reinforced bands throughout this range.

Not sure your current bra is actually fitting? Our guide to how to tell if your bra fits covers the signs to check.

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