Kelsey Husler gave birth to fraternal twins in 2014, and now, she's due to have two more. Her 3-year-old son and daughter, Braxton and Auvianna, will become older siblings to a new pair of girls. Experts say the chances of having twins in back-to-back pregnancies is extremely rare. Husler says she always wanted to have two kids, but now she'll have double that amount and quadruple the love. InsideEdition.com's Lisa Voyticki has more.