The 'Rehab' singer had tried to slip onto the side of the stage at London's Wireless festival to get closer to the British royal during Jay-Z's performance in Hyde Park on Sunday night (04.07.10).
But the beehived pop star - who has battled drink and drug addictions - was determined to get the prince's attention and shouted over security guard's heads: "Oi Harry. Oi Harry. How are ya love? I only wanted to say hello to Harry."
A reveller told the Daily Mirror newspaper: "Amy was so desperate to get near him. She didn't care who heard as she yelled."
Although he ignored Amy, the 25-year-old royal was himself snubbed last week - by pop star Pink.
Harry is a big fan of the 'Trouble' hitmaker and was hoping to catch up with the singer before she performed her set on Friday (02.07.10) at the Wireless festival, but her representatives said she was too busy to chat with him.
An insider revealed to the Daily Star newspaper: "Harry was hoping to meet Pink before she went on stage but she was too ready to rock to see anyone."