London - A British woman outraged by having to pay extra for an outsize bra has bought a single share in leading retail chain Marks and Spencer (M & S) to fight her cause from within at the company's next annual meeting, it was reported Wednesday.

Beckie Williams, 26, who wears a G cup bra, wants M & S to end the "unfair practice" of charging 2 pounds (3 dollars) extra for sizes above a DD cup.

But when the company told her that the policy would not be changed, Williams bought one share at 3.40 pounds to confront M & S boss Stuart Rose at the next annual meeting in July.

"They won't listen to me as a customer but they might listen to me as a shareholder," said Williams, founder of the pressure group Busts 4 Justice.