"Go Lakers!" Bryant wrote, alongside an old photo of Kobe and and Lakers General Manager Rob Pelinka standing courtside.
"Congratulations Uncle P! Congratulations @Lakers! Kobe was right RP, 'Stay the course- block out the noise' - @kobebryant," Vanessa wrote over the pic.
Vanessa added, "Wish Kobe and Gigi were here to see this," along with a heart emoji.
On Sunday, LeBron James and Anthony Davis led the Lakers to victory over the Miami Heat in Game 6 of the NBA finals. The decisive win earned James his fourth championship ring, and the Lakers' 17th championship title in total.
This is the Lakers' first championship victory since 2010, when Kobe and Pao Gasol led the team to beat the Boston Celtics, and his memory was honored throughout the finals.
The win comes several months after Kobe and his 13-year-old daughter Gianna died in a helicopter crash, along with seven others, in Calabasas, California, on Jan. 16.
Speaking about the victory after the big game, James reflected on how the Lakers icon's death galvanized the team and honoring his memory propelled them throughout the season.
"We got as close as you possibly can be, when that moment happened," James said of the tragedy. "It brought the whole basketball world close as well, but when you're internal and it hits home, it just means that much more and we locked in from that very moment in saying, 'This is bigger than us.'"