Hi, I'm a makeup artist at Sephora. Have your daughter come in to get all glammed up for prom! I suggest that you call in to reserve a time because we are extremely busy right now and you may need to wait for a long time.

Oh, I'm sorry. I didn't realize that you wanted MAC. Unfortunately, Sephora doesn't carry MAC. I know Nordstrom, some Macy's, and Bloomingdale's carries it for sure. I also recommend that you call in to guarantee a spot.

Have your daughter bring a picture of the dress too. That would help a lot! It's much easier if makeup artists actually see what she will be wearing to match the color(s) better rather then having the dress described. It would be even better if she wore the dress. You should allow for at least an 1 hour because you may need to wait.

Hope this helps! =)