The first six weeks: nothing silicone
A fresh chest wall is tender, and drains and incision lines mean nothing rigid should press on it. What works in this window is a light fabric shaper or soft fiberfill form worn in a soft, front-closing camisole — comfort, not symmetry. Many hospitals provide one; if not, ask your breast care nurse before buying anything.
Weeks six to twelve: the light form
Once your surgeon clears it, most women move to a lightweight silicone form — about 55% of standard weight. It restores a normal silhouette under clothing without loading a healing shoulder, and it forgives the sensitivity that lingers around the scar.
From three months: the permanent form
By now swelling has settled and the remaining breast has found its final size — which is what the form has to match. This is the moment to be properly fitted: base width and weight against your remaining side, in a bra with a pocket. If you had a double mastectomy, the fitting is done to your frame instead.
One form if you had a single mastectomy; a pair after a double. Asymmetry between a natural breast and a form is normal and invisible under clothing — nobody sees the two of you side by side in a mirror except you.
Pocketed bras
A pocketed bra holds the form flat against the chest so it cannot rotate or slide. Any full-coverage bra can be adapted with a sewn-in pocket, and dedicated mastectomy bras are widely available. This is the single highest-comfort purchase in the whole process — more than the form itself.
Paying for it
In the United States, Medicare and most private plans cover external breast prostheses with a prescription — typically one or two per year, plus pocketed bras. Suppliers who specialize in mastectomy products usually handle the paperwork. In the UK, prostheses are provided free through the NHS after surgery. Elsewhere, coverage varies; ask a local breast cancer organization before paying retail.
SilaForm supplies trade buyers, not individual patients — but any of our retail partners can order to your prescription and provide the itemised invoice your insurer needs.
This guide reflects common practice, not your surgery. Your surgeon and breast care nurse have the final word on timing — especially after reconstruction or radiotherapy.