National retailer Marks & Spencer said it found a demand for larger lingerie, the Telegraph reported.

Its best-selling cup size is 36C, compared to 34B about five years ago, said Soozie Jenkinson, the head of lingerie design. And the chain reports 25 percent of its bra sales are DD cup or larger, double the sales of three years ago.

The J-cup will be sold online to test its popularity before it is put on store shelves, the newspaper said.