Hi again!

So, I wanted to spice up my face painting a bit more, and I've noticed some people dress up for themed gigs. What's your take on this? I was thinking about it, considering I'm still a child at heart, and thought it would be fun, but I wanted to consult the board first. If you're still unsure what I'm talking about, I mean like if a little girl is having a princess party, you can charge extra to face paint in a princess costume, or pirate party, pirate costume, etc.

So, questions:
1. What's your opinion on dressing up?
2. Do you offer the service?
3. If so, where do you get your costumes, or do you make them/put them together yourself?
4. Buy them, where from?
5. What costumes do you offer?
6. Any other things you might want to add, I can't think of anything else, but I may add more later.

I won't always do it, just offer it and let the client decide, and it's just face painting, nothing else.
Opinions?