11:49 AM PT -- Sources close to the situation tell TMZ ... the party followed COVID-19 safety guidelines with less than 100 people in attendance. The state's health department recommends gatherings of no more than 250 attendees. For what it's worth ... Florida Gov. Ron DeSantis reportedly hosted a GOP backyard party last weekend in the Gov's mansion for roughly 50 guests.
As for Teyana's party ... we're told there was a mask mandate but people took them off for pics. They say having the party completely outdoors was also a safety guideline it followed.
Teyana Taylor's gotta be feeling appreciated today ... she celebrated her 30th birthday with a flashy Miami shindig, packed with her celeb friends.
The newly-retired singer danced her ass off Wednesday night at the bash ... surrounded by folks like Diddy, Lil Wayne and A$AP Ferg, just to name a few. You can see in the video ... people were shoulder-to-shoulder at times on the dance floor.
Unclear what, if any, testing went down beforehand -- but there was no social distancing and very few face masks.