Aguilera, Herzigová, Bellucci Shine at Monaco Foundation Gala

Christina Aguilera, 45, made a striking appearance in a plunging black gown at the Prince Albert II of Monaco Foundation gala on Friday. She was joined by Eva Herzigová, 53, and Monica Bellucci, 61, who also opted for elegant black dresses.

The event, celebrating its 20th anniversary, took place at the Opéra Garnier with approximately 250 guests in attendance.

Aguilera's ensemble featured a thigh-high split and a sparkling neckline. Czech model Herzigová wore a strapless dress and was accompanied by her husband, Gregorio Marsiaj. The couple recently married in Italy after being together for 25 years.

Italian actress Bellucci impressed in a V-neck flowing dress. Hollywood actor Richard Gere, 77, also attended, dressed in a tuxedo. Italian film producer Monika Bacardi chose a white cut-out dress for the event.

Herzigová met Marsiaj, whose family founded the racing car safety systems company Sabelt, in 2001. She previously spoke about their relationship, stating he brings her joy and makes her feel good about herself.

Herzigová, who rose to fame after a 1994 Wonderbra campaign, was previously married to Tico Torres, the drummer for Bon Jovi.