Don't change yourself just to impress the girls. That is much more attractive and you'll do just fine for yourself in the future when they stop being so vapid. So maybe you're destined to play the long game, but maybe it will be worth it. Pretending to be someone else is exhausting.

If she is the right girl she won't care about look :) just act yourself, don't be fake or else it'll just ruin things when she finds out