The heartwarming pictures were taken against an opulent backdrop featuring green curtains ... Their youngest son wears his ornate christening robes while his two elder brothers match in grey ...

But she already has another big event on her calendar: her christening. Insiders tell PEOPLE ... Patrick's Day Kate Middleton and Prince William Are 'Happy for People to See Them Be Touchy-Feely ...

The reality star uploaded a super-cute snaps of her eight month-old daughter in a stunning silk ivory Christening dress, simply writing, 'Happy Christening'. Imogen looked as proud as punch ...