Nobody does December birthdays like Diddy — he toasted his son Justin Combs’ 27th with a luxury-filled bash in wide-open Miami.

Diddy led the crowd in singing “Happy Birthday” to Justin during the Wednesday night celebration that started at Swan restaurant, and eventually moved to Victory Restaurant & Lounge. Both joints were packed to the gills with folks popping bottles and a custom Dior cake for Justin.

It’s 2020, so the first thing that hits you looking at the video is … no one, besides the staff, was wearing masks. That’s life in Florida these days, where there are few COVID-restrictions.

Justin’s gift from Pops was a Rolex, but not just any Rollie … it’s a custom-made one Diddy says he designed as a sort of family crest!

Just last week, Diddy also hosted a Miami yacht birthday party for his twin daughters D’Lila and Jessie — and an 80th bday event for his mom, Janice Combs. Remember, she got $1 mil and a new car!

All of the parties were mask-free, including mom’s which was in Los Angeles. It’s possible Diddy arranged testing for all his guests — we’ve reached out to his team — but what’s interesting is he’s also canceled his annual NYE event “in efforts to keep everyone safe & healthy.”