Of course it's a girl! It couldn't not be.
I actually cried when I read fake headlines about it being a girl a year ago (postpartum hormones) and made a post about how ridiculous I felt about that.
What stings the most is how much MORE excited everyone is over a little princess. I mean, people were openly disappointed about her first being a prince! Imagine if she had a second boy? The media would openly express disappointment, as if it was a huge letdown. Don't tell me gender disappointment isn't externally influenced. (Sorry, feeling bitter.)