The I Kissed A Girl singer, who is fast-tracking to fame with her outrageous outfits and stage antics, was so nervous about meeting her heroine Madonna she nearly threw up on her.
Katy had a family of butterflies in her stomach and was so weak at the knees she was convinced she would collapse or hurl at any minute. She said: "Madonna invited me to one of her shows - I was summoned by the queen herself. "I went backstage and I am never usually nervous but I lost it. I got so weak in the knees and I thought I was going to throw up."
Katy added: "But I needn't have worried. She was cool. She was so petite. She comes up to my chest and I thought she was supposed to be a giant."

Source : The Sun