Washington D.C.: After Charlie Sheen admitted to being HIV positive, many celebrities have come forward to support his decision to go public with his illness.

Pop star Lady Gaga posted a picture on Instagram, in which the actor is seen talking to Matt Lauer on 'The Today Show', captioning it, "#BraveCharlie @btwfoundation, an opportunity for people all over the world to learn about modern HIV prevention, treatments, and emotional intelligence as it relates to the stigma of the virus."