"We can not wait to get to know our latest addition to the family in late summer": Chelsea Clinton has announced via Twitter that she and her husband Marc Mezvinsky are expecting new blood.

Marc and I have loved watching Aidan become a big brother! We can not wait to meet our new addition later this summer.

- Chelsea Clinton (@ChelseaClinton) January 22, 2019

The couple already has two children: Charlotte was born in 2014, Aidan in 2016. Charlotte is a wonderful big sister, Clinton wrote. "And we look forward to Aidan becoming a big brother."

DPA

Chelsea Clinton (2nd from right) with her parents and her husband

Chelsea Clinton is the daughter of former US President Bill Clinton and former presidential candidate Hillary Clinton. The 38-year-old has been married to investment banker Marc Mezvinsky since 2010. The family lives in New York.