Pregnant Sienna Miller gave a glimpse of her baby bump as she launched her new fashion collection for the high street giant Marks and Spencer. The actress, 41, showed off her signature style as she posed in a sleek all-black three-piece suit with waistcoat, blazer, and flared trousers. Pairing the effortless outfit with statement red earrings, the blonde Layer Cake actress displayed her neat bump as she celebrated her M&S Autumn collaboration that goes live on 7 September.Talking about the collection, which offers fashionistas "timeless staples that form the foundation of any wardrobe," Sienna revealed she was "thrilled." "I have always had a genuine love for Marks & Spencer.