Prince William Makes History on Cover of Gay Magazine

"No one should be bullied for their sexuality. Don't put up with it," he said.

The young gay, lesbian and transgender individuals I met through Attitude are truly brave to speak out and to give hope to people who are going through terrible bullying right now," William said. "Their sense of strength and optimism should give us all encouragement to stand up to bullying wherever we see it."

"What I would say to any young person reading this who’s being bullied for their sexuality: don’t put up with it - speak to a trusted adult, a friend, a teacher," Prince William told the magazine.

He also encouraged those who felt helpless to reach out for help: "You should be proud of the person you are and you have nothing to be ashamed of.”

Prince William first revealed that he was appearing in the magazine on Tuesday while he and Kate signed a book of condolences for the Orlando nightclub victims.