To host a bathing suit competition, choose a cool prize, find an attention-grabbing way to announce the contest and invite competitors, establish judges and judging criteria, and secure a date with a venue for the event. Also consider the format of the event, as many competitions conduct prejudging sessions, which is where the actual judging occurs, leaving the catwalk portion of the show for the audience.
Choose a prize that is appropriate for the purpose of the swimsuit competition. If you're trying to sell a product or direct traffic to a blog or website that fits a specific theme, choose a prize that matches the theme. Broadly desired prizes tend to attract prize hunters to competitions. Featuring your own product or service as a prize and taking note of how many participants the competition attracts is a great way to measure whether people have interest in your product or service.
Set up a website or Facebook page to outline information about the competition and to show people how to register for the event. Choose a quantity of participants that is manageable both for the event and venue, and close registration a few weeks before the event is to be held.