Remembering Girls' Names

Another thing that has bitten me a bunch is remembering girls' names. Last night, I put into place a system that helps me to remember names. When a girl introduces herself, I say "like X?", naming a famous person who has the same name. If I don't know of a famous person, I say something like "where did that name come from?" This actually worked pretty well with a sample size of like 3 or 4. I need to remember to keep doing this.