Jennifer Aniston is pregnant with her first child, at least that's what the latest tabloid story claims. According to OK! magazine, the 45-year-old actress and her fiancé Justin Theroux are expecting their first child together but don't want to announce the news just yet.

"Buzz in Jen's inner circle is that she's nearly three months along but doesn't want the news to come out until she knows for sure that the baby will be ok," a source told the magazine (via Hollywood Life).

The magazine claims that Aniston was able to get pregnant through IFV treatments she started six months after dating Theroux.

"[Jen] knew that the older she got, the harder it would be to get pregnant, so she had her eggs frozen," the source claims. "When she found out the IVF worked, she burst into tears."

Pregnancy rumors were also sparked by a recent photo of Aniston attending the Los Angeles premiere of her new film "Life of Crime" (check out the photo above). The actress looked dazzling as she walked the red carpet in a shimmery grey dress and black blazer. Unfortunately the dress was a tad unflattering around Aniston's mid-section and in a couple photos the actress appeared to be sporting a belly, which was speculated to be a baby bump.

However, the "Friends" actress has already denied the pregnancy buzz last month during an interview with "Extra."

"I'm not pregnant. I'm not married. What else?" Aniston said, mocking the endless tabloid reports about her.

She also sat down with "Today's" Carson Daly and said that she doesn't think people should measure her by whether she has children or not.

"I don't have this sort of checklist of things that have to be done, and ... if they're not checked, then I've failed some part of my feminism or my being a woman or my worth and value as a woman because, you know, I haven't birthed a child."

"I've birthed a lot of things and I feel like I've mothered many things and I don't think it's fair to put that... kind of pressure on people," she added.