Dwayne "The Rock" Johnson's girlfriend Lauren Hashian is experiencing all the symptoms of a first-time mom, including hoping that she doesn't have to deliver a 20-pound baby! In a heartfelt and hilarious post on Instagram this past weekend, the mom-to-be re-shared a photo of herself with the 41-year-old "Central Intelligence" star cuddling her baby bump and, while the couple were all smiles, Hashian said she hoped her partner's well-built genes won't be passed down to their newborn.

"So grateful and in awe of this time," Hashian, 31, captioned a photo. "To experience creating a little life is just incredible. This beautiful cycle of life and womanhood beginning again. And like Big Daddy says — Couldn't be prouder of all the kickass women she's going to have around her! And Men of course ;)..."

She added the hashtag, "#LetsJustHopeBigDaddyDoesnt=20lbBaby."

Last month, the former WWE star — who has a 14-year-old daughter, Simone, with ex-wife Dany Garcia — revealed that he and Hashian were expecting a baby girl.

"I was raised by and live with amazing and strong women, so the universe felt we needed one more... IT'S A BABY GIRL!!" Johnson wrote Nov. 10. "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."

He added, "#BringOnMoreEstrogenInOurHome #MeAndPuppyHobbsAreTheOnlyDudes #2xProudPapaBear #JustOverHereMakingBabiesAndStuff #AndPalmingPregnantBellys."

Johnson and Hashian have been dating for nine years. The couple "are so excited" about the upcoming addition to their family, a source told Us Weekly.

"Dwayne and Lauren couldn't be more thrilled," another source told Radar Online. "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!"

 I know I'm late to the party... Sometimes life gets full and busy in the best ways :)... So grateful and in awe of this time. To experience creating a little life is just incredible. This beautiful cycle of life and womanhood beginning again. And like Big Daddy says - Couldn't be prouder of all the kickass women she's going to have around her! And Men of course ;).. #LetsJustHopeBigDaddyDoesnt=20lbBaby ❤️ ・・・ #Repost @therock with @repostapp. 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. #BringOnMoreEstrogenInOurHome #MeAndPuppyHobbsAreTheOnlyDudes #2xProudPapaBear #JustOverHereMakingBabiesAndStuff #AndPalmingPregnantBellys