Mick Jagger pulled the lamest rock-n-roll move ever today ... denying he flirted with a young, hot chick named Katy Perry.
In case you missed it ... Perry told an Australian radio show this week she had dinner with Mick when she was 18 -- and singing back-up for his solo project -- and claims the rock legend hit on her.
But today the 70-year old singer actually took the time to release a statement saying he "categorically denies" making a pass at Katy ... adding, "perhaps she is confusing him with someone else."
First he accepted Knighthood from the Queen, now ... he's officially denying hitting on women?
Damn, Mick. Maybe Keith Richards was right.