Palin announced her pregnancy in June, initially calling it a "huge disappointment" to her family. Later, she clarified that she is not disappointed in her pregnancy.
"I do not regret this baby," she said. "This baby is not a disappointment, and I cannot wait to be a mom times two. Tripp is going to make the best big brother!!"
Palin is already mother to 6-year-old Tripp, whose father is former fiance Levi Johnston. In May, she called off her engagement to Dakota Meyer days before their May 23 wedding date.