If you're five foot two with a big bust, your bras aren't failing because of you. They were cut for a taller woman.

You know the routine. You reach up to the top shelf in the kitchen and the wire stabs you right in the armpit. You lift your daughter's school bag onto your shoulder and the strap slides straight off it.

You spend half your life hooking it back up with one finger, hoping nobody notices.

Then there's the band. It rides up your back, so the front drops and your bust sits lower than it should. In a fitted top you look heavier and shorter than you are.

And when you finally take it off, there it is: a red line under your bust, dents in your shoulders and a sore patch where the wire's been grinding into your armpit.

The fitter at M&S found you a 30FF. It fitted in the cubicle. By the bus stop the wire was in your armpit again.

You tried shortening the straps. They hit the top of the slider and still drooped, because the strap itself is simply too long for your shoulders. You tried a minimiser from Boots. It flattened you and gave you four bulges instead of two.

Every one of those fixes changes the size. None of them changes the frame the bra was built on.

That's not your fault. You can't measure your way into a bra that was cut for somebody else's body. And every time you accept it, you're paying with sore shoulders, a back that aches and clothes that never quite look right on you.

Here's what nobody in the fitting room tells you. Underwired bras are graded up from a standard pattern built around an average-height woman. When the cup size goes up, everything grows with it: longer straps, a taller wire, a wider band.

On a five-foot-two frame, that taller wire has nowhere to go but up into your armpit. The longer strap has nowhere to sit, so it slides off. The band is spaced for a longer back, so it rides up.

The problem isn't your size. It's rigid parts drafted for a body that isn't yours.

The fix isn't another rigid bra in a different number. It's a bra with no fixed wire and no fixed hooks at all, made from fabric that stretches to the length and width of your actual frame.

The ShapeChic Original Bra has no wire to poke your armpit, and no hooks or clasps to dig into your back. You pull it on over your head like a vest.

The stretch fabric shapes itself to your torso, so it sits where your body is, not where a pattern guessed it would be. Wide cushioned straps spread the weight of a full bust across your shoulders instead of slicing a groove into them.

Full sides scoop in the spill under your arms. One wide, smooth back panel lies flat, so there's no band riding up and no rolls bulging over it.

And the lift comes from the knit and lace cups themselves, holding you up and forward without a single bit of metal.

It's the first thing every full-busted woman asks, because cheap wire-free bras flatten you or let you sag.

The difference is where the support comes from. In an underwired bra, everything hangs off two metal arcs and two thin straps. In ShapeChic, the whole garment works together: wide straps, full sides and the broad back panel share the weight, so your bust is lifted, not dangling.

Put a fitted top on over it and you'll see it straight away. Shoulders level. Bust up where it belongs. A clean line down your back. Women tell us they look two dress sizes smaller, simply because everything finally sits in the right place.

Sizes run S to 4XL, in seven colours, with lace cups that look like proper lingerie.

Picture the school run. You swing the bag onto your shoulder and nothing slides. You lean into the car to buckle a seatbelt and nothing jabs.

You reach for the top shelf in Tesco without your hand flying to your armpit. You stop hitching straps in meetings. You stop tugging the band down at the back.

You stand taller, because you're not hunching to stop a wire digging in.

And that fitted top you hid at the back of the wardrobe? It goes on. You look neat, lifted and in proportion. You look like yourself again: a petite woman with a lovely figure, not a short woman being dragged down by her own bra.

You've spent long enough blaming your body for a bra's mistake. The slipping straps, the armpit wire, the grooves in your shoulders: none of it was you.

Right now ShapeChic is running Buy 1, Get 2 FREE, so you get three bras for the price of one. One to wear, one in the wash, one for the fitted tops.

Delivery is free, and you've got 30 days from delivery to wear them properly. If they don't fit your frame better than anything in your drawer, send them back for a full refund.

Pick your size from S to 4XL, choose from the seven colours, and claim the offer while it's still running.