06/24/2010 05:12 am ET Updated May 25, 2011

Annie Lennox's HIV Shirt Explained

A lot of heads were turned last night when Annie Lennox showed up on "Idol Gives Back" wearing a t-shirt with the words "HIV POSITIVE" emblazoned on the front (she also wore the shirt to events last year, including the 2009 Edinburgh Festival of Politics and the 25th Anniversary Rock & Roll Hall of Fame concert in New York last October). The good news is she herself is not HIV positive, but simply showing solidarity with the millions of people who are.

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