What is this song calld?

there is a new song where i learned the dance moves but i 4got the name. the move r u jump and shake ur butt repeat then u do this hand thing in the air in 2 different directions this u step forward with ur right foot and swing ur right hip then step bak with ur right foot and swing ur riight hip then u turn to the left and bak it up and u just repeat. whats the song?