Straps slip off consistently when the bra band is too loose, which causes the strap anchors to migrate outward on your back and allows the straps to drift toward the edge of your shoulders. When your band isn't snug enough to provide a stable foundation, the entire bra shifts and creates the wrong "pull angle" for your straps, making gravity work against you rather than with you.
Additionally, strap placement plays a crucial role. Styles with wide-set straps, like many balconettes, position straps closer to your shoulder edge where they're more likely to slip, while center-pull, racerback, or U-back configurations keep straps closer to your neck for better stability.
Cup fit also affects strap behavior, as cups that are too big (causing gaping) or too small (creating spillage) can push straps outward and contribute to slippage.
The good news is that this isn't something you have to accept. Correcting your band fit, choosing smarter strap geometry like convertible or racerback options, and ensuring proper cup containment can dramatically reduce or eliminate strap slippage so you can move through your day with confidence. Use our bra size calculator to find your best fit.
