Nikki and Brie Bella reveal they're both pregnant, with due dates less than two weeks apart

It's double the good news for the Bella sisters.

On Wednesday, the former WWE stars, both 36, announced that they're both expecting. And better yet, their due dates are only a week-and-a-half apart.

“Wait, twins being pregnant at the same time?” Brie told People. “People are going to think that’s a joke. We both are shocked. People are going to think we planned it, but you can’t really plan pregnancy!”

The news comes only a few weeks after Nikki announced her engagement to her former "Dancing With The Stars" partner Artem Chigvintsev. The couple became engaged in Paris in November.

“[It was] a total surprise,” added Nikki. “It took even me a good week to come to terms with like, ‘Oh my gosh, I’m pregnant.’ I’m not ready for it.”

It will be Brie's second child with husband and pro-wrestler Daniel Bryan. The two, who welcomed daughter Birdie two years ago, believed they were only "meant to have one child" because it took eight months to conceive.

"My husband and I were trying for seven or eight months, but then I felt in my heart it was a sign from God, like, ‘You guys are good with one,’ so we stopped trying," she said.

Nikki explained that her pregnancy was unplanned and she felt the need to do a pregnancy test once her sister told her that she was expecting.

"Why do I keep having this feeling?" she said. "Am I getting twin vibes from her? Because she just told me she’s pregnant? When I came back in, and it said pregnant, I had to sit down for a second.”

For more on the sisters' surprise pregnancy announcement, check out their interview with People here.