Singer Lady Gaga turned 30 on Monday. Born as Stefani Joanne Angelina Germanotta, she adopted the name, 'Lady Gaga', based on the song 'Radio Ga Ga' by rock band Queen. While her debut album 'The Fame' was released in 2008, her career achievements include six Grammy Awards and twelve Guinness World Records. Gaga is known for her eccentric fashion sense.