I suggest after the baby is born having a "welcoming" party. Do not ask people to bring gifts. I can tell you that as my children get older, they look at photographs, and one asked me, what, Sarah was worth a shower but not me and Abi?
Each child is a gift and deserves to be celebrated in some way I feel, and a welcome party is how we handle that here. At the expense of the parent, not their friends.