Makeup for Shower?

Ok now that the cat is out of the bag regarding my shower date, my sister told me I should do something special and get some makeup done for the shower. She said that I could just go to bloomies in WWM and have someone do my makeup. How does that work? Do i call one of the counters and make an appointment for makeup application? How do I pay for that? Is there a charge? How much?

Help!