Celebrity endorsers Jung Woo Sung and Yoon Eun Hye are no strangers to glittery events, but their latest assignment has definitely put them among the brightest stars of the world stage. The actors were among the top celebrities who attended the launch event of the Juste Un Clou collection of jeweller Cartier in New York on April 12.

Jung Woo Sung and Yoon Eun Hye, who represented Asia at the event, also got the chance to meet the Princess of Monaco, Charlotte, granddaughter of the late legendary Hollywood icon Grace Kelly. Local news agencies reported that the royal had exchanged pleasantries with the celebrity crowd at the opening ceremony. Aside from Princess Charlotte, the two actors also met with Cartier CEO Bernard Ponaseu.

Local news agencies report that among those present at the launch’s after-party were global music couple Beyonce and Jay-Z, along with other Hollywood luminaries. Reports also cited Yoon Eun Hye’s Oriental beauty and charm, winning the admiration of the New York press with her sweet and elegant look that suited the aristocratic event.

Yoon Eun Hye has been their celebrity endorser for Cartier in Korea, appearing in a spread and participating in a charity exhibit for the brand in 2011.