The Four Seasons is going out with a bang

There was blood and Bethenny Frankel’s divorce papers floating in the pool for the farewell of the iconic Four Seasons Restaurant.

In what could be seen as an undignified final chapter for the 57-year-old landmarked eatery, Frankel — who married her estranged husband Jason Hoppy at the Four Seasons — was seen tearing up what looked like divorce docs and ditching them in the pool while lunching with “Real Housewife” Carole Radziwill on Friday.

The duo toasted with Champagne, and Frankel was overheard saying, “I can’t believe I got married here and then I spent the last 12 seasons of hell trying to get out of it!” She then tore up a legal document and threw it in the pool. She’s been going through a bruising divorce with Hoppy since 2013, which is still not settled.

Meanwhile, on Thursday night, rambunctious revelers at the restaurant’s last late-night party jumped into the pool — and at least one ended up at the emergency room.

Professional poker player Beth Shak, who owns a collection of shoes worth $1 million, was dared to jump in the pool, a tradition that was famously started by Sophia Loren and has recently been followed by many nostalgic diners. But Shak cut her foot on a submerged Champagne glass.

A witness said, “Suddenly, it was like a shark attack. There was blood in the pool, the water turned red. Beth screamed and was rushed to the ER, where she had six stitches in her left foot. The doctor gave a tetanus shot, because who knows what’s in that pool?”

More restrained guests Thursday included Martha Stewart, whose “eyebrows hit the ceiling when guests got in the pool”; Jon and Lizzie Tisch, who reminisced about their wedding at the venue; and Veronica Kelly.

At Friday’s final power lunch, co-owner Julian Niccolini told The Post, “So many memories . . . We had so much fun I could write a book. I have done dinners with every president but Nixon. We did Obama, Clinton, both Bushes, Tony Blair. It is the end of an era, but we are moving on.”

Diners bid a wet and wild farewell to the Four Seasons: