The former ‘TOWIE’ reality star, 26, posted a photo on Instagram on 12 November, in which she is holding her daughter, while her 23-month-old son Paul kisses her on the lips.
Captioning the shot, Faiers wrote: “Welcome to the world our beautiful baby girl 💕👨👩👧👦,.”
Faiers’ rep revealed the mum had given birth overnight on Saturday 11 November, telling The Sun: “Samantha and Paul are delighted to welcome a baby girl into the world, both mother and baby are doing well.”
Faiers is yet to share what she and Knightly have chosen to call their daughter.
The 26-year-old revealed she was expecting her second child in July 2017. She posted a photo of herself holding her son and displaying her bump.
“Words can’t describe how excited we are to meet you baby,” she captioned the shot at the time. “We love you soo much already #babynumber2 #2under2.”
Faiers gave birth to Paul, her first child with Knightley in December 2015.