What Jiro said.

And if you're worried she'll cheat, then trying to control her by taking away her freedoms is a really bad idea.
If she's going to cheat, she'll cheat no matter what she's wearing. Sometimes it's exciting to peel the layers of clothing off a conservatively dressed girl.
Let her make her money, dress in a way that makes her feel confident and sexy, and she'll come home at night and make you happy.