The 'Oops I Did It Again' singer ended months of speculation by confirming her big news on US breakfast show Good Morning America today (17 September).
Britney will launch her residency - called 'Britney Spears: Piece Of Me' at Planet Hollywood in Las Vegas on 27 December 2013, and fans lucky enough to get tickets can expect to hear a mix of her classic tracks and newer hits.
She will perform 50 shows a year. Tickets go on sale today.
Asked if she's ready, she replied: "I'm definitely ready. I've been sometimes training for five hours a day." She also said that while son Preston would probably join her on stage at least once, little Jayden would "have a hard time".
According to TMZ, the superstar could earn as much as $310,000 per show.
Britney's Vegas news came just days after her brand new single 'Work Bitch' was leaked online, leading to its rush release in various countries, where it has stormed the charts.
She's currently working on her eighth studio album, which is released 3 December.
Listen to Britney's new single 'Work Bitch' below:
Check out Britney's transformation from school girl to now in pictures below:
Copyright: Britney Spears / VEVO