Personalities including David Beckham, Novak Djokovic, Sir Lewis Hamilton, Hugh Jackman, Mahershala Ali and Sachin Tendulkar have teamed up with UNICEF to help launch its new initiative, Super Dads, which aims to celebrate fatherhood.

Families are urged to post photos and videos on social media showing what it takes to be a 'Super Dad' using the hashtag #EarlyMomentsMatter, and Djokovic commented 'As a father, I’ve seen for myself the impact that every smile, every bit of love, and every positive action has had on my child during these precious early years of life. Being a new parent isn’t easy. There are many challenges that fathers across the world face. This campaign is about supporting and encouraging fathers so they can be the Super Dads their kids desperately need'.