Bernstein said that she followed CDC guidelines, wore a mask when necessary and “lived life in phase FOUR reopening of NY,” but we’re told she attended a party in Montauk with 35 to 40 people, including NBA star Blake Griffin.

A source told us that guests at the sickly shindig mingled inside and outside, and that Bernstein was not wearing a mask. “No one was,” said the source. “Everyone seemed super young, like 25 and under.”

We’re told fellow partiers are freaked and rushing to get tests. Bernstein, who is quarantined in NYC, wrote on Instagram, “Of course I could have been more careful and still got it.” Her boyfriend has also tested positive.

The 28-year-old influencer, who has 2.5 million followers, has since posted stories of her eating ice cream (despite claiming she lost her sense of taste) and wearing an “at-home look” promoting her own brand of sweatpants. In another post, she wrote: “Freshly blown hair, but way too tired now … I need to chill.”

Reps did not respond for comment.