So, M&S – the store where women normally flock to buy their underwear – is effectively taxing those who have bigger breasts, writes Rebecca Lawrence.

The High Street retailer is charging more  – about £2 extra – for bras  size DD or bigger because it claims it uses more material to “engineer” them with wider straps and greater support in the cup.

But their decision has caused outrage among women – and quite rightly so.

With today’s computer networking age, a Facebook group quickly sprang up with a campaign, ‘Busts 4 Justice’, gaining support from thousands of bigger-breasted women.

Now the feisty women have bought shares in M&S so they can get access to the annual general meeting and fight the issue.

Although sadly I’m not actually affected by the price hike on larger bras, it seems very unfair to punish women for the size of their breasts – just as long as they don’t put the price of smaller bras up to match the double Ds, that is.

And surely M&S’s logic would imply the company should charge more for a size 18 jumper than for a size 10.

Perhaps as a size eight, I should be feeling mightily hard done by that I have had to pay the same price for my clothes as a larger lady all these years.

Maybe I will start a campaign for size eight pants to be cheaper than larger sizes as they certainly use less material.

But this really does seem unfair – it’s punishing people for being bigger and that’s surely discrimination.

Big breasts, I imagine, can certainly at times be hard to deal with – trying to find the right tops to suit them and giving them enough support – so why create extra trauma by having to pay a ‘breast tax’?

Even though £2 is not a huge sum to pay, it’s still more – £1 more per cup – and other lingerie retailers don’t feel the need to charge extra.

It’s not as if most women have any control over the size of their breasts – unless, of course, surgery has lent a helping hand.

Perhaps if all the big-breasted women got together to boycott M&S until bosses change the pricing policy the company would sit up and take notice.

The company says its bras are some of the cheapest on the High Street, which may be true – but it doesn’t make it right to charge more for those lucky enough, or unlucky enough (depending on your point of view), to need a little bit more material.