If only every party had an espresso martini-fueled Bill Murray sashaying away underneath a disco ball before entrees.

Perhaps the secret then is having Sofia Coppola at the helm, as she was Wednesday evening at the Doubles Club for a dinner thrown with Chanel to celebrate her second book, “ Chanel Haute Couture .”

The coolest girl on TikTok — that would be Romy Mars, Coppola’s 18-year-old daughter — and her younger sister Cosima imitated red carpet photographers as their mother posed for photos.

“Yes Sofia! Over the shoulder!” they called out at her.

Romy hung out with Gracie Abrams, while Kirsten Dunst caught up with Nicole Kidman’s model daughter, Sunday Rose Kidman Urban . Elsewhere, Lauren Sanchez was followed around by a bodyguard, Karen Elson and her daughter Scarlett Whi

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