The Sissi has an ideal and comfortable 7cm heel, which allows you to wear this boot for any occasion. The Sissi boot fits true to size. Patricia advises you to take your usual size, unless you have slightly wider feet, or prefer a roomier fit around the toe, or if you are in between sizes. In which case, try one size bigger. We will provide you with a shoehorn so that you can try on the shoes with ease. We recommend wearing the boots with a pair of thick socks for the first few times, so that they mould comfortably to your feet.