A boot with a heel of 3 inches or higher elongates your legs and makes your figure appear leaner. This style works particularly well with knee-length skirts, because this length can cut off the line of your leg and make you appear a bit shorter. Choose a boot style in a texture different from the material of your skirt to add dimension to your look. For instance, if your skirt is suede, wear it with a leather boot.

Perhaps the most practical type of boots, Wellingtons -- also referred to as "wellies" -- will keep your legs warm and dry during cold or wet weather. When wearing a skirt, you'll need this protection from the elements. Because wellies typically provide full calf coverage, your knee-length skirt will skim the top of the boots, providing ample coverage on days when the weather forecast is grim.

Best for a knee-length skirt that's loose-fitting and fluid, short ankle boots create a casual, relaxed outfit. During the warmer months, wear ankle boots with bare legs. During the colder months, wear them with opaque hosiery. You could also wear a short trouser-style sock with an ankle boot, letting the sock peek out from the top -- just be sure the sock does not bunch or slouch to avoid looking unkempt.

The equestrian boot, also referred to as a riding boot, is tomboyish by nature. Thanks to its sporty look, this style of boot can transform a ladylike knee-length skirt from dressy to edgy. Try a boot that has brass or gold hardware, such as buckles, ito maintain a feminine look. This pairing is particularly useful when you're looking to dress your skirt down for an informal or casual occasion.