Without a clever play on phonetics, Beyoncé and Jay-Z's little girl might have ended up with a name that sounded more like a perfume than a baby name -- "I'll take a bottle of the Blue Four, please." The couple has an admitted obsession with the number four, which is reportedly how they picked their daughter's middle name. Four in roman numerals is IV, which led the couple to the middle name Ivy. As for her first name, Blue, Jay-Z has a number of albums that feature the color in their titles. And Beyoncé's style seems to be inspired by the color as well. Ever since the birth of her first daughter, the singer has been spotted by tabloids sporting the vibrant color on many occasions.