The Best Bras for Bigger Busts

When it comes to comfortable bras for big busts, never underestimate the importance of a professional bra fitting (M&S BraFit appointments are available via video consultation and in store, or via our online bra-fitting tool). If you’ve lost weight, gained weight or had a baby, your bra size is likely to have changed. Our bigger-bust range, with some styles going up to a K cup, has bras to suit all tastes.

Avoid the perils of too-tight straps, digging-in underwires or a ‘mono-boob’ with a bra that perfectly fits both your back and cup size. And don’t forget to consider the silhouette of your bra in relation to your body shape. If you have a small frame with large close-sitting breasts, opt for a plunge or a full-cup style. If you have more angular shoulders and a gap between your breasts, try a balcony bra.

The underband of your bra should sit just below your shoulder blades, and you should only be able to fit two fingers under it. Wires should always sit flat between the breasts and should be flat against the ribcage at the sides – they shouldn’t sit on breast tissue. Not an underwire fan? We’ve got wireless bras for big busts, too.

The cup should fully encase the breast, with no overspill at the front or sides. Straps should be adjusted so that you can fit only two fingers under the strap. The strap should only hold the cup in place, not support your breasts – that is what the underband is for.