Kobe Bryant's big sister just got a permanent tribute to Kobe and Gianna -- a brand new tattoo with their numbers encircled by a Black Mamba snake.

Sharia Bryant Washington, the oldest of the Bryant siblings -- hit up tattoo artist Peter Barrios for the work and it turned out pretty great.

You can see the numbers 2 and 24 (worn by Gianna and Kobe, respectfully) with the Black Mamba snake in the shape of the infinity symbol.

In other words ... Gianna and Kobe forever. We can't even imagine the pains.