While the actor's close companions are still mourning his devastating death in August -- after a secret four-year battle with colon cancer -- Sunday was a day of tributes and celebration, reflecting on his incomparable life.
Boseman's Black Panther co-star and close friend Michael B. Jordan shared a heartfelt message alongside an emotional black and white photo showing the two of them embracing.
"Continue watching over us King. Happy Birthday . Miss you," Jordan captioned the sweet snapshot.
Lupita Nyong'o also shared a photo showing herself and Boseman, dressed the to the nines and smiling brightly at one another.
"Deeply loved, sorely missed. #ChadwickBoseman," Nyong'o wrote alongside the photo.
Viola Davis -- who starred opposite Boseman in his posthumously released filmMa Rainey's Black Bottom -- shared a truly iconic gif of a tuxedo-clad Boseman being showered in gold confetti at an gala celebration in honor of the special day.
"Happy birthday in Heaven, Chadwick! You are still so alive to me!! I love you 💛👑" Davis wrote.