Lean in. Adjust the straps to their maximum length (you’ll shorten them later) and slip your arms through. Lean forward into the cups, hook up the bra at the back if you can (if not, fasten the bra at the front and then turn it around, taking care not to strain the elastics, before leaning in) and put the straps on your shoulders.
Adjust the bra. To do this slip a hand into the cup and lift the breast while holding the wire in the correct position with the other hand. Where should it sit? Look at the natural crease of the breast - the wire should fit along the crease where your breast begins while remaining on the ribcage so that it doesn’t pinch the breast tissue.
The jiggle: Hold the wires under the breasts, lean forward and gently shake the bra to the left and right. Your breasts will fall into the cup and sit higher when you stand up straight.
Adjust the straps. Remember that it’s the bra band that provides most of a bra’s support – not the straps. The straps should therefore support the breast lightly without putting too much pressure on the shoulders; otherwise, the back of the bra will ride up and affect your posture. Drop the strap off your shoulder so that you can reach the adjusters from the side (or ask someone to help you). You only need to do this once, and the strap length will be right every time.