Hey girls, I was a slacker and didn't pack my bag until I was in labour! (First baby - I was in labour for a while )
I made the mistake of thinking I'd fit into my pre-pregnant jammies. Noooo, siree. Take bigger clothes cause you still have a jelly belly for a little while
Have you got lots of girly products? (ie, big fat surfboard sanitary pads?) Take LOTS, lol.
All the best for your labour and birth!

ETA: Oo, I forgot, you might need to take a cardie or slightly warmer clothes, even though it's summer - those hossies have air con that's sometimes a little chilly...