Professor Trelawney is a pretty rare minifigure to own, as she does not appear in many sets. There's the one which currently only appears in the Lego Hogwarts Moment: Divination Class 76396 set. Then we have a very similar-looking minifigure which was in the first run of the Lego Harry Potter minifigure series. The main difference between these two minifigures is that the one from the Divination Class set has minifigure legs instead of a skirt. The rarest Professor Trelawney is from the 2004 Hogwarts Castle 4757 set. She has a delightful blue robe, as well as either a pink or purple wizard hat. Interestingly, it was randomized as to which hat she would have when you bought the set.