Liz Hurley bumps into ex-husband Arun Nayar

Elizabeth Hurley arrives for the Valentino Master of Couture Party. (AP)

Elizabeth Hurley attends the VIP view of Valentino: Master of Couture at Embankment Gallery. (GETTY/GALLO)

Kim Johnson and Arun Nayar attend the VIP view of Valentino: Master of Couture at Embankment Gallery. (GETTY/GALLO)

Princess Beatrice, Sarah Ferguson Duchess of York and Princess Eugenie attend the VIP view of Valentino. (GETTY/GALLO)

Princess Maria Olympia of Greece and Crown Princess Marie Chantal of Greece attends the VIP view of Valentino. (GETTY/GALLO)

Valentino Garavani attends the VIP view of Valentino: Master of Couture at Embankment Gallery. (GETTY/GALLO)

Stella McCartney attends the VIP view of Valentino: Master of Couture at Embankment Gallery. (GETTY/GALLO)