Bruno mars debuts “Fat Juicy and Wet,” his collaboration with Sexyy Redd, on 17 different Billboard charts this week.

Lady Gaga and Bruno Mars teamed up to offer an emotional tribute ... the two performers jointly up for two Grammys this year, for song of the year and best pop duo/group recording.

Lady Gaga and Bruno Mars won the ... During their heartfelt speeches, Mars, 40, thanked Gaga, 38, for the chance to work together. "I'm so honored to be a part of this song with you.