Nude models

Models for life drawing classes are often entirely nude, apart from visually non-obstructive personal items such as small jewelry and sometimes eyeglasses. In a job advertisement seeking nude models, this may be referred to as being "undraped" or "disrobed". (Alternatively, a cache-sexe may be worn. Eadward Muybridge's historic scientific studies of the male and female form in motion, for example, has examples of both usages.)

In Western countries, there is generally no prohibition on either sex posing nude for or drawing members of the opposite sex. However, this was not always so in the past, particularly prior to the 20th century. In 1886 Thomas Eakins was famously dismissed from the Pennsylvania Academy of Fine Art for removing the loincloth from a male model in a mixed classroom. Similarly, Victorian modesty required the female model to pose nude with her face draped. European arts academies did not allow women to study the nude at all until the end of the nineteenth century. Up into the present day some rare art classes prefer male models to wear a jockstrap.

Policies vary regarding male models having an erection. Some instructors don't mind at all (especially with younger or inexperienced models), while others, including the Register of Artists' Models in the United Kingdom, consider this as cause for termination. In any case, it may be inconvenient for the artists, as the subject is not exactly the same as when the drawing session commenced.

During art school classes or an academic setting, it is commonly prohibited for anyone (including the instructor) to touch the model. Very close examination or requests for adjustment are typical—with the permission of the model. A few institutions allow only the instructor to speak directly with the model.

Additionally, nude models are sometimes paid to model as part of a performance or work of art; a fine example is the work of Vanessa Beecroft. Nude modeling can also occur in a private setting as demonstrated in the films As Good as it Gets and Maze. Finally, a person can be their own model, while solo, with or without mirrors.