For the big day, Nicole looked to Donna Karan, wearing a strapless black gown with a sculpted pointy feature along the neckline, which nearly mirrored a flower and delicate draping throughout the torso. The archival gown also featured a backless design and a dramatic side train. To create her look, she worked with stylist Jamie Mizrahi.

Cameron Diaz, Lionel Richie and Paris Hilton were amongst the celebrities who attended the marriage, which saw Sofia marry Elliot Grainge. Nicole attended the marriage alongside her husband Joel Madden.

On Sunday, Nicole took to her Instagram to post a series of her outfits from the marriage. She wore a green sheer Alberta Ferretti gown from the designer’s spring 2023 ready-to-wear collection, which WWD reported “was searching for unexpected touches, details and color combos.” She also posted a photograph with Sofia, captioning the post, “I like you greater than anything.”

Nicole is thought for her standout looks with this one being her latest. In March, she attended Chanel’s Paris Fashion Week show alongside Sofia wearing a blue plaid check jumpsuit with Chanel C logo buttons. To the Vanity Fair Oscar Party in 2022, she went edgy in an alluring strapless shirtdress with a sheer skirt by Saint Laurent. She looked to Paco Rabanne’s 2023 resort collection for her outfit to the 2022 MTV Movie & TV Awards: Unscripted in June, which consisted of a silver-and-gold sequin crop top and ruffle-hem miniskirt.

Outside of non-public fashion, Nicole is the creative director of House of Harlow 1960, a brand that provides jewelry, eyewear and loungewear.