Labour worries 👶🏼

Amy
I feel like this is a bit of a silly question to be asking, it's the smallest worry I have and I know at the time I won't be thinking about this at all but in all seriousness, what in the world can I wear to give birth in?
I'm 33 weeks and have mostly everything sorted all I have left to do is to pack my hospital bag now and buy a few more nappies. 
I am the type to worry and the closer my due date is getting the more I'm freaking out about the whole labour, delivery part of this. Not because of the pain but because it's not in my control and I don't know what to expect.
Can anyone give me any advice on how to put my mind at ease? And what to wear, I just don't want to wear a hospital gown!