Popsugar Fashion Kate Middleton How Much Do Kate Middleton's Clothes Cost? The Exact Cost of Kate Middleton's Wardrobe May Shock You June 18, 2018 by Marcia Moody View On One Page Photo 21 of 32 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 21 Kiki MCDonough: National Portrait Gallery Gala The most expensive Kikis of the year were the whopping pink tourmaline and green amethyst earrings, which cost $12,336. Previous Next Start Slideshow Kate MiddletonThe British Royals