Explore katy perry's official site for music, news, and exclusive content.Concert events listed are based on the artist featured in the video you are watching, channels you have subscribed to, your past activity while signed in to youtube, including artists you searchKatheryn elizabeth hudson (born october 25, 1984), known professionally as katy perry, is an american singer, songwriter, and television personality.She is one of the best-selling music artists in history, …