Nicole Kidman put on a brave face as she stepped out for the first time since filing for divorce from Keith Urban. Kidman was joined by her sister, Antonia, as seen in photos obtained by the Daily Mail. Nicole Kidman Leans On Sister Amid Keith Urban SplitGetty Nicole Kidman filed for divorce from Keith Urban. On September 29, TMZ reported that Kidman and Urban called it quits after 19 years of marriage. Shortly after news of their split broke, TMZ reported that Kidman had filed for divorce from Urban, citing “irreconcilable differences” as the reason.