J.B.
What we did was estimate the amount that it would cost with our insurance, of course you can call and get a pretty accurate figure. Just call your OB and your insurance company. We saved for that. Then we save about $1,000 for all the baby stuff. You know, like double stroller, room decor, and lots of odds and ends I can't even think of at the moment. I literally just made a list and bought everything I could off it until our little nest egg was toast. I was also thrown a shower and people got me lots of cute little things like gel pads to put in your bra to relieve pain, onsies, etc. I really didn't know if anyone would do that for the second baby, but my MIL informed me they will throw me one for every baby. It was really nice! So that is what we did, beyond that we just take it as it comes!!! Good luck, having two is more work but so completely awesome!!