Blake Lively styles glittering blue mermaid dress with over 50 carats of jewelry at Tiffany & Co. bash

And she said, what about dinner at Tiffany’s?

Blake Lively shimmered in a mermaid-like blue dress to attend a star-studded party at Tiffany & Co.’s NYC flagship store Thursday night — and she brought out some serious bling for the event.

The “Gossip Girl” alum, 36, stopped traffic in her blue beaded look at the launch of the Tiffany Titan by Pharrell Williams collection, waving to the crowd of fans gathered outside the store.

According to Vogue, the sleeveless midi dress — which was covered in fish-scale-like beading — “appears to be a midcentury vintage piece from Braxae Vintage Co.”

But the real star of the show came in the form of her Tiffany & Co. jewelry, with the “Shallows” star pinning two diamond bird brooches — one featuring a massive yellow diamond drop weighing in at more than 16 carats — to her dress.

She put a unique spin on a massive diamond and blue cuprian elbaite tourmaline necklace for the event, choosing to wear it wrapped around her wrist like a bracelet.

Lively added sparkling diamond drop earrings and three bold rings to her ensemble, including a yellow diamond sparkler with a six-plus carat center stone.

Lively kept the Tiffany blue theme going with embellished Gucci heels, wearing her blond hair in glamorous curls and accenting her features with bright pink lipstick.

She joined Williams — who wore pieces from his new collection — and celebs like A$AP Rocky, Ayo Edebiri, Gabrielle Union and Blackpink star Rosé at the intimate dinner celebrating Tiffany & Co.’s latest line.

This is hardly the first time the “Age of Adaline” star has piled on the jewels this year; she wore nearly $500,000 in Tiffany & Co. pieces to Super Bowl 2024 as she cheered for the Kansas City Chiefs alongside BFF Taylor Swift.

We have a feeling she’ll keep the sparkle going on Monday’s Met Gala red carpet.