Furthermore, Beyoncé and Jay-Z named their first child Blue Ivy Carter. The word "Ivy" refers to the Roman numeral for four, which could've been a selling point when choosing their daughter's name.

The state government bought a one-third share of Jay-Z’s Roc-A-Fella Records at ... which also founded the Rocawear clothing line. New York City has also demanded more than $193,000 in unpaid ...

Beyoncé and Jay-Z are celebrating their 17th wedding ... Additionally, Beyoncé's former clothing line was titled Ivy Park. It's clear the number four is more than just a coincidence — it's ...