Did anyone notice how the Asian girls in the last Christmas episode of The Office changed?

The waitressess at the Benihana's were one set and then half way through the girls changed. As soon as they got to the office party they were different. What is that about?|||I think they did it because they wanted to drive home the joke the all Asians look alike. Not that I agree with that, but they probably meant it that way. Just an idea, because Michael says that "all... waitresses... look alike".|||Really? I'll haft to look at that! They did seem a little different...That's odd!

professor layton