hiding your pregnancy!!

ahhh!!! I have a wedding to go to tomorrow and we haven't announced it yet (as I'm between 10-12 weeks and waiting for a dating scan next Friday) but you can clearly tell I'm pregnant from my little bump! (second pregnancy!) what on earth can I wear to hide it?? there's no hoodys and leggings at weddings! lol! This is what I was planning on wearing as didn't think I'd show this much, this early! HELP!