LeBron And Savannah James Show Off Dance Moves At Kendrick Lamar Concert

LeBron James and his wife, Savannah, kept the birthday vibes going at the Kendrick Lamar concert on Sunday ... 'cause they were straight-up grooving to the rap superstar's music!!

The King and his Queen hit up the Rogers Arena in Vancouver one day after her special day ... and by the looks of it, they were having the time of their lives.

In the clip, you see James and Savannah posted up in what appears to be a private seating area ... but they weren't just standing around -- they were definitely feeling themselves.

Naturally, once fans noticed the 4-time champ in the building, many swarmed to the James Gang's spot ... taking pics and videos of LBJ.

Of course, Kendrick is on tour for his latest studio album, "Mr. Morale & the Big Steppers," but rather than wait for K. Dot to perform in L.A., LBJ decided to check it out while up North.

You can tell LeBron was feeling the song selection ... and when the California MC started performing his hit song "Humble," James went crazy and even engaged with the crowd.

Bron has regularly shown love to Kendrick, especially when he releases new music ... posting videos of him jamming to K. Dot's bars and giving the rapper his flowers.