Victoria Beckham has revealed she was mentally and physically bullied at school and still suffers from ingrained insecurities as a result.
The former Spice Girl turned fashion designer spoke to Glamour magazine about her experiences at school.
Beckham said she believes it is important to educate her daughter Harper on the importance of kindness, and the need for girls to be gentle with the emotions of other girls.
"I was never the popular girl at school and I never found anything easy. I was bullied a lot at school, mentally and physically," she said.
"I can talk to Harper about that and how girls should be kind to girls... really I use my own experiences and share that."
The mother-of-four said she was taught a lesson in life's struggles, and the need to work for success.
Beckham, known as Posh Spice, would enjoy a string of hits with the Spice Girls, before making her mark on the fashion world.
"It made me insecure, but it also made me realise if I want something, I'm going to have to work hard at it.
"Nothing ever came naturally and that's OK."
Meanwhile, a new algorithm has been created that can identify bullying and troll-like behaviour on Twitter with 90pc accuracy, researchers have said. The software uses natural language processing and sentiment analysis on tweets to classify them as cyber-bullying or cyber-aggression.
The algorithm has been developed by researchers at Binghamton University in the US.
The research comes as a number of high-profile personalities - including football show presenter Gary Lineker and Countdown's Rachel Riley - backed a new campaign to ignore and report abusive messages to help cut the spread of hate on social media.