Georgina Bloomberg and her fiancé — who just welcomed a baby girl in June — have split, Page Six has learned.

Multiple sources tell us that former New York City mayor Michael Bloomberg’s equestrian daughter and financier Justin Waterman have called it quits.

Insiders say that the breakup is the talk of their elite Westchester horse club. “The entire Century Club knows,” said one.

In May the heiress announced her pregnancy on Instagram, writing “2 week countdown begins today. I cannot wait to meet you baby girl.”

Then in July she posted a carousel of adorable pictures of the baby. But sources noted at the time that Waterman was absent from the snaps.

“Scarlett arrived into our world on June 13th, and immediately stole the show, and our hearts,” Georgina wrote.

The former couple als

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