TOWIE's Billie Faiers has given birth to a baby boy.

The reality TV star revealed the good news by posting an Instagram snap of fiance Greg Shepherd carrying the newborn in a car seat.

She captioned it with the words: "Welcome to the world our beautiful baby boy.

"We love you more than words can describe, you are truly perfect in every way."

It is the 27-year-old's second child with Greg, who she has been engaged to since 2014.

The couple already have three-year-old daughter Nelly Elizabeth.

In 2015 Faiers was named Celebrity Mum of the Year.