Reality TV star Charlotte Crosby is among the celebrities supporting Jamie Oliver's Food Revolution, alongside YouTube stars Alfie Deyes, Tanya Burr, Jim Chapman and singer Cheryl.

The stars will all cook live on Facebook throughout the day (May 20) supporting the Food Revolution, a global campaign to help change the way children consume and understand food, as figures show 41 million children under the age of five are overweight, while 159 million are underweight.