Keith Urban has been photographed in public for the first time since Nicole Kidman filed for divorce, ending one of entertainment's longest-running marriages after 19 years.

People reports that Kidman felt 'very betrayed' by the split. 'Nicole's hurt and feels betrayed. It's devastating to her. She's shocked,' a source told the magazine.

Kidman's filing requests that she be named the primary residential parent of the couple's two minor children, under a parenting plan that would give her 306 days a year with them and Urban 59 days.

Sources told People the separation 'really hasn't been a secret,' saying the couple had been living apart for some time and that 'once he quietly set up his own place, it felt like the writing was on the wall.' Representatives for Urban and Kidman did not immediately respond to Fox News Digital's request for comment.