On October 13, Tiffany & Co. hosted an unforgettable evening in Beverly Hills to unveil its re-designed store on Rodeo Drive. The event attracted major Hollywood stars, Kate Hudson, Jennifer Garner, Halle Berry and Reese Witherspoon. The luxury jewelry company also celebrated their 2016 "Masterpieces" collection.

Tiffany & Co. Tiffany & Co.'s unveiled its newly renovated Beverly Hills store and debuted the 2016 Tiffany masterpieces on Oct. 13. Photo: Charley Gallay/Getty Images for Tiffany & Co.

Hosted by Tiffany Senior Vice President, Jennifer de Winter, in partnership with philanthropic organization, The Art of Elysium, the event highlighted Tiffany’s 179-year heritage of glamour and style. 

The evening featured a surprise performance by Ariana Grande who serenaded the audience with a trio of hits including “Dangerous Woman” and a special rendition of “Diamonds Are a Girl’s Best Friend.” 

Ariana Grande The evening featured a surprise performance by Ariana Grande who serenaded the audience with a special rendition of “Diamonds Are a Girl’s Best Friend.” Photo: Charley Gallay/Getty Images

Grande donned showstopping Tiffany & Co. jewelry that included a $250,000 necklace. 

Sofia Vergara, Ali Larter, Camilla Belle, Gal Gadot, Jaime King and Rachel Roy were all in attendance, stepping out in borrowed pieces from the company, as were Matt Bomer, Robbie Rogers, Jack Huston and Liam Hemsworth.

Launch the slide show above to see all of the night's dazzling fashions.