I was quite worried that Miss C was going to decide to arrive on her brother's birthday. She wasn't due until the week after his birthday but she decided she wanted to join in the second birthday celebrations and came 4 days before Wee Z's birthday.
We had a birthday party for Wee Z on the Sunday before he turned 2. Luckily it was a joint party and my friend did a lot of the work and prep since I had Miss C to look after and I'd had little sleep since I'd given birth. We just had to turn up.