"I Kissed a Girl" is the first single by pop singer Katy Perry from her album "One of the Boys" (2008), produced by Dr. Luke. On June 26, 2008, the song topped the "Billboard" Hot 100 chart, becoming the 1000th chart-topper of the Rock Era. The song has since become a major worldwide hit, and along with the United States it has topped the charts in more than 20 countries, including Canada, Sweden, Australia, United Kingdom, New Zealand, Italy, Germany, and Ireland.