Jennifer Aniston and her fiance Justin Theroux have yet to announce any details about their wedding, but friends say they are already working on getting pregnant.

And not only are they trying to get pregnant, they are using a very famous book trilogy for inspiration - E.L. James' BDSM series "Fifty Shades of Grey."

A friend revealed some private tidbits from Aniston and Theroux's relationship and how "Fifty Shades of Grey" has become a part of it, according to a new report from Perez Hilton.

"Jen and Justin are having the time of their life trying for a baby, and Jen has been totally inspired by 'Fifty Shades of Grey' and has acted out some of the scenes with Justin," a friend close to the couple revealed. "They're at is like crazy. She said they've been having wild fun with feathers and blindfolds and dirty talk."

Friends of Aniston have told several media outlets that she has had a baby on the brain ever since Theroux popped the question in August.

"The night he proposed, he told Jen that he wanted her to have his child," an insider said. "She's been joking that in a perfect world it will happen on the wedding night."

Even though Aniston would ideally like to wait until after her marriage to get pregnant, the friend added that the 43-year-old actress knows she may have a hard time conceiving, so she isn't wasting one minute to get started on the task.

"It's no secret she wanted a baby yesterday, so they're not wasting any time," the source said. "She's not in denial; she knows it may be difficult."

Aniston has reportedly thought a lot about the possibility of getting married while she is pregnant, and the insider said she would absolutely love that, even if it means wearing a maternity wedding dress.

"In truth, she'll be overjoyed whenever it happens; if that means she has to walk down the aisle with a baby bump and do her toasts with apple cider, then so be it," the source said.

Tags
Jennifer Aniston, Justin Theroux