Who needs a little black dress? Navy is quickly becoming the go-to color for fashionable women everywhere, thanks to the classic, stylish pieces Middleton wore on her 2011 North American tour. Middleton's navy blue Amanda Wakeley suit received praise from the press as she and Prince William embarked on their trip. She changed into a Roland Mouret navy shift on the plane ride to Canada, pairing the dress with a smart Smythe les Vestes blazer. Later, she looked stunning in a navy lace overlay and cream bodice by Canadian designer Erdem Moralioglu. As the couple left YellowKnife for the Northwest Territory, Middleton donned a Ted Baker navy blue trench, a versatile piece the duchess previously wore to a horse race in 2008.