Ooh, she knew this one! Kitty had studied the stars a lot more this term than in previous ones, but even if she hadn't she would have known this one.

"Betelgeuse is my favorite star of Orion. It forms the shoulder and is pronounced Beetlejuice. It sounds beautiful, doesn't it? I learned about it when I was five, and I've always felt a special connection with Betelguese."

She'd been stargazing with her parents. When she first heard the name she fell in love with it. And then there was a certain old Muggle movie that had the same name which she also felt a connection with.