"Congratulations on your 8th grade graduation Gigi," Vanessa said on Instagram. "I love you forever and always."
Gigi was a student at Harbor Day School in Corona Del Mar, CA ... and was in the middle of her 8th grade year when she died in the tragic helicopter accident alongside Kobe and 7 others on January 26.
The school honored "Gianna Maria-Onoré Bryant" with a diploma -- and Vanessa was clearly moved by the gesture.
"I’m so proud of you. ❤️, Mommy #classof2020."
Gigi was a standout basketball player with dreams of making it to the WNBA ... and her school retired her #2 jersey at a memorial ceremony in February.
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