Dwayne 'The Rock' Johnson and his long-time partner Lauren Hashian are expecting a baby girl. The 'San Andreas' star and Lauren announced they are expecting their first child together in September and the wrestler-turned-actor has now taken to his Instagram account to reveal they're preparing for the birth of a girl. Dwayne posted a picture of himself cradling Lauren's baby bump, and captioned the image: "I was raised by and live with amazing and strong women, so the universe felt we needed one more... IT'S A BABY GIRL!! THANK YOU guys so much for the awesome support and love you've sent @laurenhashianofficial and myself from around the world. We're so grateful for this blessing and thrilled to share the news with y'all. (sic)" Dwayne already has a 14-year-old daughter, Simone Alexandra, with his ex-wife Dany Garcia, and a source close to the Hollywood star recently said he's "thrilled" at the prospect of becoming a father for the second time. The source explained: "Dwayne and Lauren couldn't be more thrilled. They've been rock solid for about nine years now and felt it was time to expand their family. "Lauren's brother is also expecting a baby, so the entire family is overjoyed!"