▲Throughout her childhood, the actress had to move school several times as she was always seen by her classmates as an 'outsider.' The actress explained to The Sun that she had to learn to deal with being made fun of.

▲The singer has spoken several times about the bullying she suffered as a child, owing to the popularity she had from appearing in TV programs at a young age. Christina even spoke about the issue with journalist Hoda Kotb.

▲Bale told the Mirror in 2008 that he was bullied at school: "I took a beating from several boys for years. They put me through hell, punching and kicking me all the time."

▲The actor revealed to Young Hollywood that he was often a victim of bullying owing to his height.

▲Kylie opened up to Wonderland about the bullying she suffered through her childhood. Her contemporaries judged her and called her names, which is why she decided to find people who were like her.

▲The actress and singer has already been the ambassador for several anti-bullying campaigns because, as she revealed to People, she had a difficult childhood dealing with people who made fun of her.

▲In an interview with Teen Vogue, the actress related that it was almost always boys who were mean to her at school.

▲Jessica Hay, a childhood friend of the Duchess of Cambridge, told The Guardian in 2011 that Kate was often bullied by other girls who said she was too nice.

▲The Olympic swimmer's mother told Yahoo.com about a time when Phelps got into a fight with his bullies at school and ended up getting suspended.

▲The former Spice Girl told Ok! Magazine in 2011 that during her childhood she was often made fun of by her classmates for having a thin face and body.

▲One of Efron's former classmates told The Mirror that the actor had been seen as a nerd, and that he hadn't got on well with a lot of people, as well as being bullied.

▲Jessica Alba didn't have an easy childhood, but she revealed to Self magazine that she used the bullying she suffered to become a stronger and more fulfilled woman.

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Her love of music and theater during middle school caused her contemporaries to make fun of her, revealed Lady Gaga in an interview with Rolling Stone in 2011.

▲In a 2009 interview with Marie Claire UK, Kate confessed that she was bullied for being fat.

▲Miley Cyrus told Elle magazine that she had suffered from depression after being bullied for her acne.

▲Colfer's clothes and orientation made him a victim of bullying while at school, as he revealed in an interview with Entertainment Weekly.

▲Megan Fox told E!News in 2009 that she was constantly bullied at school by classmates.

▲In her book 'Winona Ryder: The Biography,' the actress revealed that she was constantly harassed by a boy who offended her with homophobic comments.

▲During a question and answer session for the site Cleveland.com, the singer explained to a fan that she had also suffered bullying for a long time during elementary school.

▲On '60 Minutes,' Spielberg revealed that his classmates just thought he was a nerd who played the clarinet in the school band.

▲The rapper said in a 2010 interview with Anderson Cooper that he had been a punchbag for his contemporaries at school.

▲The actor has often cited bullying as the reason behind his hard work and success.

▲The actress told The Guardian that her classmates had made fun of her for her gothic style.

▲Timberlake revealed on 'The Ellen DeGeneres Show' in 2010 that he had grown up in a city where American football was the main culture, and that he was teased because he didn't like it.

▲The singer told Teen Vogue that lots of her classmates hadn't thought she was pretty or cool so they never spoke to her.

▲In an interview on 'Showbiz Tonight,' Eva Mendes said that she had been tormented by a bully from seventh to ninth grade.

▲In 2013, the singer told Glamour magazine that she had been constantly bullied for her skin color.

▲In an interview with Contact Music, Bullock said that her clothes had made her a victim harsh teasing at school.

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The billionaire's mother, Maye Musk, told Esquire magazine that he had been the biggest victim of bullying at the school he went to in South Africa for being the youngest and the shortest.

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Bullying is not mere child's play, it's a practice which can leave psychological damage for life. And this is no more apparent than in the world of celebrities. Check out the gallery to see the stars who suffered from bullying during their childhood.