Ala. Code § 45-35-20.05: Exceptions.

This part shall not be deemed to be violated in any of the following circumstances:

(1) When a person appears nude in a public place provided or set apart for nudity, and the person is nude for the sole purpose of performing a legal function that is customarily intended to be performed within the public place, and the person is not nude for the purpose of obtaining money or other financial gain for the person or for another person or entity.

(2) When the conduct of being nude cannot constitutionally be prohibited by law because it constitutes a part of a bona fide live communication, demonstration, or performance by a person when the nudity or simulated nudity is expressive conduct incidental to and necessary for the conveyance or communication of a genuine message or public expression and is not a guise or pretense utilized to exploit nudity for profit or commercial gain.

(3) When the conduct of being nude cannot be constitutionally prohibited by law because it is otherwise protected by the United States Constitution or the Constitution of Alabama of 1901.