Shawn "Jay Z" Carter isn't an only child - in fact, he is one of FOUR children. He has two older sisters Andrea and Michelle, and an older brother Eric. Here's what they all look like:
Erica on the right and Michelle on the left:
They all must be celebrating now that Jay Z is a father again - of twins (Rumi and Sir Carter?) - and his newest album 4:44 went platinum in less than a week (thanks to some downloads offered by Sprint).