Lady Gaga came to prominence following the release of her debut studio album The Fame (2008), which was a critical and commercial success and achieved international popularity with the singles "Just Dance" and "Poker Face". The album reached number one on the record charts of six countries, topped the Billboard Dance/Electronic Albums chart while simultaneously peaking at number two on the Billboard 200 chart in the United States and accomplished positions within the top ten worldwide. Achieving similar worldwide success, The Fame Monster (2009), its follow-up, produced a further three global chart-topping singles "Bad Romance", "Telephone" and "Alejandro" and allowed her to embark on her second global concert tour, The Monster Ball Tour, just months after having finished her first, The Fame Ball Tour. Her second studio album Born This Way (2011) topped the charts in all major musical markets after the arrival of its singles "Born This Way", "Judas" and "The Edge of Glory" – the first-mentioned achieved the number-one spot in countries worldwide and was the fastest-selling single in the history of iTunes, selling one million copies in five days.
Inspired by glam rock singers like David Bowie and Freddie Mercury, as well as dance-pop artists such as Madonna and Michael Jackson, Lady Gaga is well-recognized for her outré and ever-changing sense of style in music, in fashion, in performance and in her music videos. Her contributions to the music industry have accrued her numerous achievements including five Grammy Awards, among twelve nominations; two Guinness World Records; and the estimated sale of more than 22 million albums and 69 million singles worldwide, making her one of the best-selling music artists worldwide. Billboard named her the Artist of the Year in 2010, ranking her as the 73rd Artist of the 2000s decade. Lady Gaga has been included in Time magazine's annual Time 100 list of the most influential people in the world as well as being listed in a number of Forbes' annual lists.