Missouri Revised Statutes Title XXII. Occupations and Professions § 324.403. Title of registered interior designer, use, when

No person may use the name or title, registered interior designer, in this state unless that person is registered as required by sections 324.400 to 324.439. Nothing in sections 324.400 to 324.439 shall be construed as limiting or preventing the practice of a person's profession or restricting a person from providing interior design services, provided such person does not indicate to the public that such person is registered as an interior designer pursuant to the provisions of sections 324.400 to 324.439.