Chemicals and obesity are blamed. Men answered: YEEEHHAAAA!!!!
http://www.dailymail.co.uk/pages/live/femail/article.html?in_article_id=509323&in_page_id=1879
"In less than ten years the average bra size has grown from a 34B to 36C.
Marks & Spencer say a quarter of all its bras sold are a D cup or above - a figure which has doubled in three years. And, in response to customer demand, its range, which used to end with a G cup, now goes up to a J. Lingerie company Bravissimo has even introduced three different K cup bras."
http://www.dailymail.co.uk/pages/live/femail/article.html?in_article_id=509323&in_page_id=1879
"In less than ten years the average bra size has grown from a 34B to 36C.
Marks & Spencer say a quarter of all its bras sold are a D cup or above - a figure which has doubled in three years. And, in response to customer demand, its range, which used to end with a G cup, now goes up to a J. Lingerie company Bravissimo has even introduced three different K cup bras."