Milan is not a primarily tourist city, which suited us perfectly. It was the part of the trip where we had all seven of the girls together and where some of us were having our reunions with Greta. Our main priority was just catching up and spending time together, and not having a huge list of other things to see and do meant we could just be relaxed about it.
The one tourist attraction Milan does have is the Duomo, and we sure did see it thouroughly. By day, by night, in passing as we shopped around it and from the rooftop. Climbing it was Spectacular.