Hollywood superstar Jennifer Aniston has just become a great-aunt as her niece welcome their first child.

The niece of the 52-year-old actress, Eilish Melick announced on social media that she has mothered a baby boy - the great-nephew to Jennifer Aniston. 

The Friends superstar's niece also shared some cute photos of her son on social media after she gave birth to the child on July 9.

The couple has yet to name the child.

In December last year, Eilish Melick had announced through a cute social media post that she was pregnant.

The 24-year-old budding actress is the daughter of Jennifer Aniston’s half-brother, John Melick III - an assistant film director in Hollywood. She also has a younger brother, John Mellick IV.

Jennifer Aniston has yet to congratulate her niece.