The prince leggings along with the prince tunic make up the prince outfit. It was received from completing the Kiss the Frog random event and choosing Save up for a costume upon opening the random event gift. The leggings can then be claimed from Iffie in Thessalia's Fine Clothes in Varrock. After the removal of random events, the leggings can be obtained for 1500 coins from Iffie. The leggings cannot be traded and gives no bonuses, but it is still worn by people who like the way it looks or want to show off the uncommon outfit. It almost looks similar to the desert legs, which can be bought at Ali Morrisane.
The colour of the legs will automatically change to the colour of the player's base footwear. Yrsa's Accoutrements in Rellekka can recolour the bottom half of the prince leggings, provided the player is not wearing any cosmetic override.
Before the random event update, a player could trade in a frog token for the entire prince outfit (the prince tunic and the prince leggings). After that, with the random event gift box, a player can only receive one piece of this costume each time he/she receives the random event. This was changed after random events were removed from the game.