You don't have to use your real name, you can have a blog that shows you in all the dresses you want. However, if you are going to claim to be someone with thousands of social media followers and post pictures of that person you should try to prove in some way that you are actually that person.

You could do it on a post on any of the social media platforms you use or simply take a picture holding a sign that says steemit on it and post it here.