Dressing up with beard and mustache can only make you look like a clown and you can never achieve a decent girly look that you always dream for. I am not saying that you should always make it is a routine by always keeping your waxed hands, clean shaved face and shaped eyebrows. Even though no need to maintain every grooming activity as a regular activity but maintaining your eyebrows in shape(if you wish to) should be done on regular basis otherwise people will easily catch you. It happened to me couple of times..of course.