Onyx Demi Bra & Ouvert Brief Set: Fit and Styling

Quick answer

Start with the band, not the cups: fasten the Onyx demi bra so the back sits level and firm, then use its full back adjustment to fine-tune tension before you judge coverage. Style the set as a matched black base, and let the ouvert brief's open back be the detail you dress around.

Step-by-step fit and styling routine

1. Fasten the bra on the loosest hook: Put the Onyx demi bra on with the band fastened on its loosest setting, then adjust the full back adjustment until the band sits level and firm around your ribcage. Common mistake: starting on the tightest hook, which leaves no room to refine tension later. Checkpoint: the band should not ride up when you lift your arms.
2. Settle the cups before the straps: Lean forward slightly and use your hand to bring the breast tissue into the cups, then stand up and check that the demi neckline sits flat against the chest. Common mistake: pulling the straps tight to create cleavage, which lifts the cup edge away. Checkpoint: no gap between the cup edge and your skin when you move your shoulders.
3. Shorten straps only as a final trim: Adjust each strap by the same amount, a few millimetres at a time, until the bra feels secure without digging in. Common mistake: uneven strap lengths, which twist the centre front and make one cup feel different from the other. Checkpoint: the centre front of the bra sits flat against your sternum.
4. Close the ouvert brief and test the back: Fasten the ouvert brief's hook and check that the open back lies flat with no pulling at the fastening. Walk and sit down to see whether the brief shifts. Common mistake: ignoring a fastening that digs in, which will only get worse when you move. Checkpoint: the hook stays closed and the back edge stays smooth after sitting.
5. Style the set around the open back: Wear the set under a low-backed or backless top so the ouvert brief's open back is the feature, and keep the rest of the outfit simple so the black lace reads as one coordinated base. Common mistake: layering a busy print over the set, which hides the open-back detail you chose it for. Checkpoint: the open back is visible or easily revealed when you move.

Product facts

• Onyx Demi Bra & Ouvert Brief: The Onyx demi bra is underwired and sized S, M and L, with full back adjustment. The S–M–L sizing means you fit the band first and use the back adjustment to fine-tune tension, rather than choosing a cup size.

  

• Onyx Demi Bra & Ouvert Brief: The set pairs the demi bra with the Onyx ouvert brief, which has a cheeky open back fastened with a hook. The hook fastening is a fit checkpoint: if it does not sit flat, the brief will shift and the open back will not lie smoothly.