Labia minora

The labia minora, Latin for "smaller lips," singular: "labium minus "smaller lip"", also known as the inner labia, inner lips, vaginal lips or nymphae, are two flaps of skin on either side of the human vagina. It is an opening in the vulva. It is between the labia majora (the Latin for "larger lips;" also called outer labia, or outer lips). 
The labia minora vary widely in size, color, and shape from individual to individual.