Maya, that's fantastic. I know you love Anthropologie clothes so I bet you'd like working there (I wonder what the discount's like?). London is getting its first Anthropologie shop soon, I think it's opening this week. I can't wait to check it out!
Hmm, I'm probably not the best person to dispense advice here because I don't have too much experience with Anthropologie, beyond my yearly trips to NYC. I would say go "Anthro" on your top half only, maybe with a pretty blouse, or some accessories? I think, paired with one of your pencil skirts (I know you have a nice black one, did you end up finding a microcheck/patterned one in the end?) and heels, that would be a good way to incorporate their look, while staying interview-appropriate.
But first, to Angie's point- what Anthropologie clothing do you have? Any accessories from there?