Hey Princess ... WANNA RACE?!!
Conor McGregor was rubbin' elbows with ROYALTY on the French Riviera on Monday ... racing water bikes with Princess Charlene of Monaco and the pics are awesome.
The two got in a workout while Conor and his family are in the area on vacation. Afterward, their families -- including Prince Albert -- hung out together on shore.
"A Great day racing the water bikes with Princess Charlene of Monaco,:" Conor said,.
"A phenomenal athlete and Olympian, we are teaming up for a 180km voyage in September to raise awareness in water safety.