My hospital offers a sibling class that we just went to. It was the cutest thing ever so I thought I should share.

It's a one hour class ($15) for ages 3-5. This one parent brought a 2 yr old and you could tell he was not into it and cried most of the time. LO is 3 and she loved it! The instructor talked to the kids in a very realistic but age appropriate way. she explained how baby eats in mommy's tummy and what the baby looks like inside. They got to practice diapering and swaddling. My LO has a doll she "diapers" but understood the directions on being gentle and how to lift the baby. She also swaddled like a pro
They toured the nursery and saw real babies inside all nice and swaddled. The nurses made them feel really special by congratulating them on being a super sibling every time one of them walked by. The class finished with goody bags and a certificate ceremony.

Seriously so cute. Hopefully she will remember everything she learned by the time little bro is actually born.