Gender expression, or gender presentation, is a person's behavior, mannerisms, and appearance that are socially associated with gender, namely femininity or masculinity. Gender expression can also be defined as the external manifestation of one's gender identity through behavior, clothing, hairstyles, voice, or body characteristics. Typically, a person's gender expression is thought of in terms of masculinity and femininity, but an individual's gender expression may incorporate both feminine and masculine traits, or neither. A person's gender expression may or may not match their assigned sex at birth. This includes gender roles, and accordingly relies on cultural stereotypes about gender. It is distinct from gender identity.