World Wish Day is 29 April. Make-A-Wish Foundation wish granters Justin Bieber, Miley Cyrus, Cake Boss’ Buddy Velastro, internationally renowned photographer Nigel Barker, WWE Superstar John Cena, actress Tiffani Thiessen and host of the Daily Show, Jon Stewart, are part of a special group of celebrity wish granters who’ve come together to to raise awareness about World Wish Day and the Make-A-Wish mission.