Nicole Kidman and Keith Urban rarely let their children make an appearance on social media but the country music star couldn't help but feature their offspring in a very funny Instagram Story on Thursday. The Hollywood couple are proud parents to Faith Margaret, 10, and Sunday Rose, 12 - and it appears that at least one of them has a great sense of humour. MORE: Nicole Kidman's niece is her double in beautiful new photoTaking to Instagram Keith wrote: "One of our daughters said, 'I saw Mom on