The labia minora (singular: labium minus), also known as the inner labia, inner lips, vaginal lips or nymphae, are two flaps of skin on either side of the human vaginal opening, situated between the labia majora (outer labia, or outer lips). Inner lips vary widely in size, color, and shape from individual to individual. They are homologous to the male foreskin, frenulum, urethra but no other penile skin.