Like the t-shirt, the trench coat was originally a military invention that slid into the masses between World War One and World War Two. It's traditionally made from khaki fabric, but recent memorable editions have come in pink (Burberry, Gap), silver (Gareth Pugh), and red (Ruffian). To celebrate the staple, which may be the only piece of outerwear that's never hit an "out" list, the designers at Aquascutum have released a new book on the coats. Written by style critic Nick Foulkes, the book has 250 color photographs of trench coats throughout history. Alas, unlike its subject, it is not waterproof.