Prince Albert's son Alexandre Grimaldi-Coste, 19, says it's 'insulting' to be called illegitimate as his parents 'did not commit adultery' - and adds he has a 'great relationship' with his siblings

The university student, who turns 20 this week, gave a tell-all interview to French magazine Point de Vue ahead of his birthday, where he described father Prince Albert of Monaco, 65,  as 'benevolent'.