Kim Kardashian just reunited with an old friend - and brought along Khloé Kardashian! On Friday night, the reality star took to Instagram Stories to reveal that the pair hung out with none other than Britney Spears! OMG! Oh, and the pop star's longtime manager and friend, Cade Hudson, was there too! Related: Britney Spears Tells Kevin Federline To Eff Right Off In New Post! It appears the group had a pajama party as Kim sported a black robe with her hair in a slicked-back bun, while Khloé wore Christmas-themed pajamas with her hair down in loose waves.