You will need to be sure that you are wearing something that will show off ALL of your muscles. However, use caution. If you are a man, a skimpy swim suit will do just fine – much like that is made by Speedo. For women, you will want to wear a bikini in a body building competition, but be sure it’s tasteful. It’s not “Girls Gone Wild”, so make sure you promote your professionalism.
Body building competitions are great places to showcase a body that you’ve worked hard to make beautiful. Don’t have unrealistic expectations, but get in it to win it! You deserve it!