SEE IT: Beyoncé and Jay-Z’s daughter Blue Ivy shows importance of washing hands in coronavirus PSA

The eldest child of music superstars Beyoncé and Jay-Z is using her voice for a good cause.

Blue Ivy Carter, 8, stressed the importance of hand washing to prevent the spread of illnesses like coronavirus in a new video shared by her grandmother, Tina Knowles.

The adorable Instagram clip shows Blue...