Tristan Thompson held a funeral for his late mother this weekend -- which a handful of notable celebrities flew out for to pay their respects ... including the Kardashians.
The NBA player was on hand Saturday in Toronto -- where a service was held for his mom, Andrea, who died suddenly over a week ago after suffering a heart attack. Tristan was dressed in all black outside, where Andrea's casket was eventually carried through as well.
Looks like some famous faces attended the celebration of life .