© @Copyright HELLO! Hello! Magazine Jennifer Aniston will take on a brand new role this year – the 52-year-old actress is going to be a great aunt!It has been revealed that Eilish Melick – daughter of Jennifer's half-brother, John Mellick III – is pregnant with her first baby. Eilish and her husband, Sean Nebbia, shared their happy news in December, posing together with their ultrasound images.