A longline bra extends below the conventional underbust band, covering more of the lower ribcage. This extended body provides a wider surface area over which the band can distribute support — useful at larger cup sizes where concentrating all the support load on a narrow 2–3 centimetre band creates pressure points. It also smooths the torso under fitted clothing, particularly under tailored tops and strapless garments where the back panel is visible.
When a longline works better than a standard bra
Longline bras are worth considering for strapless occasion wear where the extended back panel helps keep the bra stable throughout the day. They're also useful for women who find standard bra bands create discomfort at the underbust due to the concentrated pressure — the wider band distributes load more evenly. Under tight-fitting clothing, a longline can also smooth the silhouette between the underbust and the waist in a way a standard bra doesn't.
This provides more adjustment range as the band relaxes and wears in. A longline should feel firm on the loosest hook when new, so you can tighten it as the band stretches.
Strapless longlines
For occasions requiring a strapless garment, a longline strapless bra provides more stability than a standard strapless — the extended panel gives the bra more to grip with silicone lining, and the additional contact area reduces rolling and riding down. Browse all strapless bras for styles with and without the longline extension. See also multiway bras for convertible options.
