Spirit Airlines has updated its policies to prohibit passengers from wearing 'inadequate' clothing, including see-through garments and exposing private parts. The revisions included detailed language on what constitutes unacceptable dress, aiming to maintain decorum on flights. Travelers can be removed from flights for violating these new guidelines, with similar standards noted by other airlines. In the past, passengers were reportedly dismissed for wearing crop tops and other attire, raising questions about the enforcement of such rules. The changes have received mixed reactions from the public, highlighting a growing focus on airline attire regulations.