The 49-year-old actress adorned an elegant ivory-coloured lace dress created by fashion designer Nicolas Ghesquiere when she married husband Keith Urban in 2006.
Kidman has revealed she is giving the gown to an artist to feature in an exhibition titled 'Love' because she supports anything romantic, reported Femalefirst.
"I'm giving my wedding dress, the Balenciaga one that Nicolas Ghesquiere did for me, to an Australian exhibit called "Love.' I'll support anything that supports love. Truly. Isn't it the essence of everything?
"It can heal so many things. Good love, sweet love, kind love, gentle love, powerful love. There are so many different forms of love, which then leads to loss, which then leads to all the primary emotions. We all know children who were raised with love. You can see them," she said.