Provided is a brace liner configured for use with a conventional knee brace, wherein the brace liner is configured to include a portion which is worn under the knee brace and a portion that is folded over the knee brace to define a pocket which captures the knee brace to hold the knee brace in proper position on the users knee. The brace liner is worn like a conventional pair of pants, and thus is supported by the wearers hips, which in turn supports the knee brace from the wearers hips, to prevent the knee brace from migrating downwardly during usage of the brace. The brace liner also tightly conforms to the brace to reduce the appearance of the knee brace.