Nicole Kidman is entering a new era of her life with her sister by her side. Kidman, 58, returned to Instagram for the first time since finalizing her divorce from Keith Urban after 19 years of marriage. "Sisters 🌸," the Lioness actress captioned the Thursday, January 8, post via the social media platform, which featured her younger sister, Antonia Kidman. Nicole put her natural curls on full display in the gorgeous snapshot, pairing the hairstyle with a chartreuse lace gown with dainty sleeves.