Actor Jonas, who recently wrapped up filming for the highly anticipated movie , arrived in Rome to celebrate Bulgari's 140th anniversary and the unveiling of their high jewellery collection Aeterna. The evening hosted at the Italian capital's heritage wonder, Terme di Diocleziano, which was recently opened for public, saw a show and a gala dinner that was attended by and friends of the house, including Shu Qi, Anne Hathaway, Priyanka Chopra, and Liu Yifei. Chopra Jonas debuted a chic new bob hairstyle, and to celebrate the special anniversary, the brand's ambassador wore the , which boasts about 140-carat diamonds.

According to the jewellery house, this high jewellery creation is one of their most valuable pieces crafted from their ateliers. The Serpenti Aeterna necklace, which took 2800 hours to complete, features a rough diamond of over 20 carats, cut into seven pear-shaped drops that collectively weigh 140 carats—one for each year of Bulgari's history. The drops are set within a sinuous, three-dimensional wave structure that features 698 baguette diamonds weighing a total of 61.

81 carats. The actor wore an off-shoulder cream and black gown by , accessorised with the Serpenti Aeterna necklace. She was seen holding a and smiling as she mingled through the event.

Paying homage to their heritage, the Italian luxury brand chose its hometown to unveil their collection and also host this celebration which included a gala dinner and a show styled by legendary stylist Carine Roit.