A device for altering lip 40 and/or mouth shape comprises one or more protrusion elements configured 10 to be fitted inside a wearer's mouth behind the lip 40 such as to push the lip 40 outwards. The protrusion elements 10 may be diamond or dome shaped and provided with various diameters and depths. The device may also comprise means for attaching the one or more protrusion 10 elements to the teeth 20 or gum 30 of the upper jaw, the means preferably comprising an adhesive (110, 120, 130, Fig 2) or clips configured to slot between the wearer’s teeth 20. The protrusion elements 10 may be formed integral with, or otherwise releasable from, the mounting means. The device is preferably formed from a composite resin or porcelain material.
