"They started telling friends a few weeks ago," another source told People. "The family has known for quite some time. She is really excited and so is Travis!"
Said a second source, "It is an unexpected but completely amazing turn of events that she could not be more excited or thrilled about."
"Everyone is overjoyed for her," they continued. "This is the happiest she's ever been."
Kylie and Travis began dating back in April when they were spotted sticking to each other like glue at Coachella. Since then, the pair has been seen out together on multiple occasions and have even gotten matching tattoos.
The happy couple has yet to officially confirm the news, but Kylie did post a Snapchat photo earlier today that shows her wearing a pretty baggy shirt. Trying to cover up that baby bump perhaps? Check it out below.
[Photo: Getty Images]