NEW YORK -- Kylie Jenner announced the birth of her second child with rapper Travis Scott in a post Sunday on social media — with a blue heart indicating it's a boy.The 24-year-old reality star and makeup mogul didn't disclose the new baby's name.The child was apparently born Wednesday, as the Instagram post was captioned with the date “2/2/22” and a black-and-white photo of the newborn apparently holding hands with his big sister, Stormi, who turned four on Feb.