Fashion designer Nicolas Ghesquière, who heads Balenciaga, created the one-shoulder, ecru lace dress (and organza jacket) Nicole Kidman wore to marry singer Keith Urban. Steal her look with these sweet but cutting-edge gowns.

A jacket should be fitted and frame the neckline. Silk charmeuse gown with twisted bodice ($3,900) and pearl-adorned jacket with three-quarter sleeves ($4,900), Anna Maier Ulla-Maija Couture; 212-768-0707.