I sent a letter, two photos of painting of Lady GaGa I've painted, a photo for her to sign & a SASE on 5th February 2009 and received the response on 11th February 2009.

I wrote to Lady GaGa via venue: Arena and Convention Centre Liverpool, Monarchs Quay, Liverpool, L3 4FP

She kindly signed the photos of my paintings:

 

"Adam
   You're so beautiful.
      <3 Lady Gaga"

"Adam
   I love you
      Enjoy The Fame
         <3 Lady Gaga"

She sent me back my photo signed too with a special message !!