So adorable! It was a good idea to get the size you did - so many ppl buy gifts that fit the baby immediately, but then in a couple of months, baby's wardrobe is empty!
When my bf's sister had her baby in June (and when my sister had her baby three years ago, for that matter), I got a little something for everyone. I got Daddy a "World's Best Dad" t-shirt (it came with fabric paints to put a child's hand prints on it, too), I started a scrapbook for Mommy, and I got Baby a little outfit from ON (like NCshopper suggested). It was so cute; it had a red pepper on it and read "I'm a hottie" or something.
oh my gosh, that is the most thoughtful gift! your bf and his family are really lucky to have you steph!