"I have some exciting news to share with you: Late last night, in Switzerland, Mirka and I became proud parents of twin girls," he wrote, on Friday, Jul 24 morning.
Federer's wife, Mirka gave birth to twin girls Myla Rose and Charlene Riva.
"We named them Myla Rose and Charlene Riva and they are both healthy and along with their mother, they are doing great," he said.
This comes weeks after he grabbed the Wimbledon title for the sixth time. With this win he owned 15 grand slam titles beating the record of Pete Sampras.