Jessica Simpson has sent birthday wishes to her nephew Bronx as he turns one.

The 29-year-old became an aunt on November 20 last year when her younger sister Ashlee, 25, gave birth to a baby boy, Bronx Mowgli.

Bronx, whose dad is Fall Out Boy rocker Pete Wentz, turned one this week and his aunt wished him a happy birthday on her Twitter page.

She wrote: “Happy Birthday to my precious angel on earth!!! Bronx is 1 today!! I LOVE HIM SO MUCH!!! I can’t believe it has been a year already.”

Bronx’s mum Ashlee wrote the day before his birthday: “BX’s 1st bday tomorrow! My angel is going to be a year!! The greatest year of my life.”