Lady Gaga apparently got teary-eyed this past weekend -- in a good way. A cadre of Russian Monsters put together an epic, 7-plus-minute flash mob, featuring a medley of artRave jams, and when Gaga saw the video, she tweeted: "Made me cry. We belong together."

Paws up!

Check out the amazing video below. Which do you like best? The Gaga mob? Or Taylor's "Shake It Off" crew?