After appearing in stage productions and television series, Spears signed with Jive Records in 1997 at age 15. Her first two studio albums, certified diamond in the US, . . . Baby One More Time (1999) and Oops!. . . I Did It Again (2000), were global successes and became two of the best-selling albums of all-time, along with making her the best-selling teenage artist of all time. The former's title track was ranked at number one by Rolling Stone in 2020 as the greatest debut single of all time and the latter held a 15-year record for fastest-selling album by a female artist with over 1. 3 million copies sold in its first week. Spears adopted more mature and provocative themes and aesthetics for her next two studio albums, Britney (2001) and In the Zone (2003), and made her feature film debut in a starring role in Crossroads (2002). She became the executive producer of her fifth studio album Blackout (2007), which is often critically referred to as her best work. Due to a series of heavily publicized personal struggles in the public eye, promotion for the album was limited and she was later involuntarily placed in a still ongoing conservatorship. Since then, she released the chart topping albums, Circus (2008) and Femme Fatale (2011), the latter of which became her most successful era of singles in the US charts. She embarked on a four-year concert residency, Britney: Piece of Me, at Planet Hollywood Resort & Casino in Las Vegas to promote her next two albums Britney Jean (2013) and Glory (2016). Since 2019, Spears has been involved in an ongoing court-led investigation into malpractice conducted by her conservatorship team.