Bruno Mars is reportedly rounding up his girl gang ... Mars and Sexyy Red dance in front of a red background in matching suits, before Lady Gaga and ROSÉ also appear in the video.

"I'm so honored to have a small part in your giant musical legacy," Bruno Mars told Lady Gaga upon accepting the award for best pop duo/group performance Marina Watts is a Digital Writer ...

By Rania Aniftos Bruno Mars is reportedly rounding up his girl ... Mars and Sexyy Red dance in front of a red background in matching suits, before Lady Gaga and ROSÉ also appear in the video.