Plunging necklines blamed for plunging sales by female M&S shareholders Last updated at 19:42pm on 09.07.08 Plunging necklines have been blamed for plunging sales as Marks & Spencer chiefs today came under fire from lady shareholders.Executives faced complaints from some that its fashions are too young, offering too much cleavage for its loyal older customers.Investors have been getting worried because the value of M&S shares has slumped in recent days after the iconic high street chain revealed a fall in sales.And today at the company's AGM at London's Royal Festival Hall, shareholders lined up to offer a diagnosis of...