Beyoncé and Jay Z have yet to announce the names of their twins.
However, TMZ did a little sleuthing and discovered legal documents to trademark the names Rumi Carter and Sir Carter. The family company filed the paperwork, just like it did with Blue Ivy.
The children are part of the family empire, which extends far beyond music. The trademarks could be used for cosmetics, baby strollers, sports balls and fragrances.