Look up the term "power couple" in the dictionary and you might find a photo of Beyoncé and JAY-Z (and their kids!). And while there's no denying how incredible their music is, we have to admit we're absolutely fascinated by their three children. While Bey has posted tons of photos of their oldest daughter Blue Ivy over the years, she's been a lot more private when it comes to sharing snapshots of the twins, Sir and Rumi. Keep reading to learn a little bit more about Beyoncé and JAY-Z's children and get a bird's eye view of their day-to-day family life.