Taylor Thomas was Melissa Hastings and Ian Thomas's unborn child. Melissa announces she is pregnant in "The New Normal". It is later revealed that Taylor was a girl.
Series
Melissa confides in Spencer the name she and Ian had chosen, noting they chose Taylor because it works for a girl or a boy.
Melissa reveals to Spencer that her baby is a girl.
It is revealed that Melissa lost the baby. Hanna also predicts that Garrett Reynolds might be the father of Taylor because of his talk of "Medical records don't lie" and he went with Melissa to get her ultrasound, but it is still unknown if Garrett was actually the father or not.
Melissa reveals, along with being the Black Swan, that she lost her baby the day after Ian was found dead. She was going to tell Spencer, but found Ian's phone in Spencer's possession, and had been faking her pregnancy ever since.