Can't go wrong with a pair of black fitted pants, and a nice collared button up shirt, both from the womens section of course. The bonus with this is if you can find a matching jacket you have yourself a job interview outfit. Suggestion on the colour of the of the top. Pending on if there is a party afterwards and where, if it's somewhere like a restaurant or function center, don't pick white. You're going as a guest, you're not a member of the staff