The cover of the latest People magazine shows Aiken holding his infant son, Parker Foster Aiken, with the headline: "Yes, I'm Gay." The cover also has the quote: "I cannot raise a child to lie or hide things."
The magazine has an interview with Aiken and confirmed that he was on the cover but refused to release the article to The Associated Press until Wednesday.
The baby's mother is Aiken's friend and record producer Jaymes Foster.
Aiken, who gained fame as the runner-up on American Idol in 2003, rarely addressed the frequent rumors about his sexuality. In an interview with The Associated Press two years ago, he said: "I don't really feel like I have anybody to answer to but myself and God and the people I love."