Donald Trump Jr. moved on from Kimberly Guilfoyle pretty quickly, but eagle-eyed fans spotted a sign that he might not be ...

In Kimberly ... the former Fox reporter showed up at Mar a Lago looking fantastic Saturday night. Rocking a frilly black gown with a plunging neckline, Guilfoyle was in good company.

While Campins does have a dedicated makeup team on Fox, unfortunately the excess amounts of makeup are super similar to Kimberly Guilfoyle's ... on the website for her company, Campins Luxury ...

That meant that Trump Jr. had to say good-bye to Kimberly ... as a Fox News host, she also left the network under a dark cloud. As Burleigh noted, citing a 2020 New Yorker report, Guilfoyle ...