Lou Williams Gets Wall-to-Wall Mural of Kobe & Gianna in His Atlanta Home

Lou Williams decided to honor Kobe Bryant and his daughter, Gianna, by getting a HUGE mural in his man cave at his Atlanta home this week .. and it's pretty amazing!

TMZ Sports has learned the Los Angeles Clippers guard hit up his good friend and tattoo artist Fennell "InkByKali" Cunningham for the Mamba and Mambacita mural.

We're told because Lou and Kobe were real close, InkByKali had to make sure the mural was perfect ... so he hit up another artist, Tay Hill, to help out.

You can see in a video of the mural, obtained by TMZ Sports, the art is a HUGE painting of Kobe in his Lakers gear with Gianna in her Mamba Academy jersey. All told, we've learned the piece took 13 HOURS to paint!

"Definitely honored to have been a part of doing this mural," InkByKali tells us.

After Kobe tragically died in a helicopter crash on Jan. 26, Lou went on Twitter the next day and expressed how much pain he was in, saying, "Been crying on and off."

"Have random thoughts about things we spoke about then laugh. Cry again."

Lou even put out a song dedicated to the Mamba called "24" this week ... writing a caption along with the track that read, "Wrote a open letter to the homie."

Of course, Lou ain't the only NBA baller honoring the Mamba ... stars like LeBron James and Anthony Davis have gotten tribute tats -- while others in the league have been hoopin' with messages to Kobe on their sneakers.