A song in which Pitbull sings in the beginning..?

Pitbull sings in the beginning, then it's a girl, who sings the whole rest of the song. The beat of the song is regular and is not necessarly a club song. The voice of the girl is soft and she's says : ''Everybodyyy.. (...)'' near the chorus...or pre-chorus. She repeats it everytime this part comes back. (she sings the same sentence, beginning with ''Everybody"..) This does not seem to be a group of girls, but a girl alone. That is all I got to find the song =( Thanks for helping.