I didn't. I did get cut 12"+ off, but not until about 4months after my son was born, and I don't think it really had anything to do with having a baby. I tend to transition long to short every few years. Just last week, I cut mine-- but only a little this time. (No more mermaid hair! If I was to be caught naked with only my hair to cover myself, I'd no longer be safe, haha!).