Iconic luxury jeweler Tiffany & Co. reopened its Fifth Avenue flagship last night, and marked the momentous event with a grand, star-studded party. At The Landmark, guests dressed in their most elegant gowns were able to peruse through the brand's dazzling diamond collection before walking the Tiffany-blue carpet to the after-party.

Blake Lively, Hailey Bieber, Florence Pugh, and Anya Taylor-Joy were among the stars who gathered at the bash to celebrate the luxury brand—and to see Katy Perry perform. The singer surprised the audience by making an appearance with the Radio City Rockettes—another New York City staple. Dressed in Tiffany's signature blue, she sang her biggest hits, including "I Kissed a Girl" and "Eye of the Tiger."

Ahead, see every celebrity red-carpet look from the night.

Blake Lively and her mom, Elaine Lively

The Gossip Girl alum in a brown latex dress from Brandon Maxwell's pre-fall 2022 collection, matching sandals, and Tiffany & Co. jewelry.

Her mom in a black suit, Tiffany-blue button-up, glossy black shoes, and a matching belt.

Hailey Bieber

In a black midi dress from Versace's fall/winter 2023 ready-to-wear collection, and Tiffany & Co. jewelry.

Florence Pugh

In a breezy pistachio-green Valentino gown and Tiffany & Co. jewelry.

Anya Taylor-Joy

In a bright red feather dress from Dilara Findikoglu's spring/summer 2023 ready-to-wear collection, plus Tiffany & Co. jewelry.

Tiffany Haddish

In a black Christian Siriano pre-fall 2023 dress with a sheer top and and abstract silver embellishment. She also wears Tiffany & Co. jewelry.

Gabrielle Union and Dwyane Wade

Union in a semi-sheer black Elie Saab dress with flared layers and lace detailing, plus Tiffany & Co. jewelry.

You Might Also Like

• 4 Investment-Worthy Skincare Finds From Sephora

• The 17 Best Retinol Creams Worth Adding to Your Skin Care Routine