Published Wednesday, 06 August 2014
Katie Price shared this image of her newborn daughter. (© PA)
Price, 36, gave birth to her fifth child on Monday, two weeks ahead of the date she was due to have a Caesarean delivery.
She and Hayler - with whom she has an 11-month-old son, Jett - were on the brink of splitting earlier this year when she accused him of having an affair with her best friend, and announced she planned to divorce him.
However, on Tuesday she posted a picture of the new baby online accompanied by the message: "Daddy's little girl", followed by a smiley face.
The arrival of the new baby was confirmed by her publicity team.
Their relationship appeared to be on the rocks in May when Price posted a series of messages on Twitter alleging Hayler had been conducting an affair with her friend Jane Pountney.
But within weeks she suggested there could be a reconciliation, saying that "time is a healer".
Hayler is Price's third husband, as she was previously married to singer Peter Andre and Celebrity Big Brother contestant and cage-fighter Alex Reid.
She also has two children, Junior and Princess, from her four-year marriage to Andre and a son, Harvey, from her brief relationship with footballer Dwight Yorke.
© UTV News