One of Hillary Clinton and Bill Clinton‘s greatest accomplishments is their 39-year-old daughter, Chelsea Clinton! Unlike her parents, Chelsea decided to go into the publishing business and has already written five children books. She also has another publication out about global health.

In 2014, Chelsea made Bill, 72, and Hillary, 71, grandparents for the first time when she welcomed daughter Charlotte, 4, into the world with her husband, Marc Mezvinsky.

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“I think my love for Charlotte has just opened more space in my heart and my brain that I didn’t even know was there,” Chelsea gushed in a 2015 interview with People. “I didn’t know I could care more intensely about anything until I became a mom. Somehow I love my husband even more, I love my parents even more. I feel even greater urgency about the work that I do, particularly around women and girls being a mom of a daughter.”

One year after Chelsea gushed about her new role as a mom to People, she gave birth to a son, Aidan, 3, in 2016. “Marc and I are overwhelmed with gratitude and love as we celebrate the birth of our son,” the American author said via Twitter shortly after Aidan was born. “We are blessed,” Chelsea added, according to Today.

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Chelsea will soon become a mom-of-three once she welcomes her new baby with Marc. That’s right, the couple are expecting again! “Marc and I have loved watching Charlotte be such a wonderful big sister and we’re excited to watch Aidan become a big brother!” Chelsea excitingly revealed on Twitter in January. “We cannot wait to meet our newest addition later this summer.”

Hillary and Bill must be so happy that their family is growing even larger. With one more kid at home, we can’t wait to see what type of new children’s books Chelsea will end up writing!