Pop princess kicked off the third leg of “Britney: Piece Of Me” residency in Las Vegas last night, after a 2 months break. Britney was wearing a wig and Alien was replaced by Do Somethin’ again. +100 photos in our gallery:

  

– Work Bitch – 1 / 2

– 3

– Everytime – 1 / 2 / 3 / 4 / 5

– …Baby One More Time – 1 / 2 / 3

– Oops!… I Did It Again – 1 / 2

– Me Against The Music – 1 / 2 / 3 / 4 / 5

– Gimme More – 1 / 2 / 3

– Break the Ice

– Piece of Me – 1 / 2

– Boys

– Perfume – 1 / 2 / 3 / 4

– I’m a slave 4 u – 1 / 2 / 3

– Freakshow – 1 / 2

– Do Somethin’

– Circus – 1 / 2 / 3 / 4

– I Wanna Go

– Toxic – 1 / 2 / 3 / 4

– Stronger

– (You Drive Me) Crazy – 1 / 2 / 3

– Till The World Ends – 1 / 2

Next show tonight!