Aston Merrygold of JLS has been inspired to join the anti-bullying online Big March because he was bullied.
The 22-year-old, who has since shot to fame in the chart-topping band, has been transformed into a digital avatar for the march, led by bullying prevention charity Beatbullying, which takes place on November 15 to mark the start of Anti-Bullying Week.
"Having suffered bullying growing up, I have always been a big supporter of Beatbullying - the Big March has to be their most exciting and fun campaign to date," he said.
The X Factor judge Louis Walsh, Alesha Dixon, Diversity, The Saturdays as well as soap stars Michelle Keegan and Brooke Vincent will also be doing the virtual march.
"What an amazing idea! I'm going to be fixed to my computer screen all day trying to spot all the celebrities," said Louis.
Strictly Come Dancing judge Alesha added: "Let's get our marching shoes on. I am proud to join others in the Big March urging the government to do more."
The online march will head towards No 10 Downing Street, where Beatbullying hopes to present a virtual petition to Prime Minister David Cameron, asking for help to protect children from bullying, violence and harassment.