Sisterly love! Nikki Bella took to Instagram on Thursday, February 27, to gush over her twin, Brie Bella, as they embark their pregnancy journeys together.

“There’s nothing better than having a loved one, a sister, a twin, a true partner in crime, a ride or die, to have your back for life,” the 36-year-old captioned a photo with her sis. “So lucky to have the support and love of my sister. It’s helped me create magic in this world and smile when days seem tough. My rock for life.”

The siblings announced they’re both pregnant on January 29. Neither Nikki, who’s expecting her first child with fiancé Artem Chigvintsev, nor Brie, who’s having her second baby with husband Daniel Bryan, saw this coming.

Nikki Bella in Pink Swimsuit and Brie Bella in Black Bikini Selfie in Bikinis
Courtesy of Nikki Bella/ Instagram

It turns out, Nikki believed she wouldn’t be able to get pregnant after doctors told her she would most likely struggle to conceive. As a result, she and Artem did the deed without using protection, which led them here. “I was in the discussion of freezing my eggs,” Nikki revealed on “The Bellas Podcast” on February 7. “It was right around Halloween, a day or so after, [and Artem and I had unprotected sex] two nights straight in the moment because I’m like, ‘I can’t get pregnant. I need help.'” This led the pair of siblings to conceive under the same roof. Twinning, or what?!

Now, the Total Bellas stars are more inseparable than ever. “Nikki and Brie are close, but the fact that they’re both pregnant at the same time has bonded them like never before,” a source exclusively shared with Life & Style. “Brie’s done it before so Nikki is getting the benefit of having her best friend and sister to lean on for support and pregnancy advice.”

In addition to the sisters bonding more, so are their baby daddies. “Daniel has even given Artem some pointers,” a second insider revealed to Life & Style exclusively. “It’s just about being grounded and patient.”

Nikki and Brie are due to give birth in the summer. We cannot wait for their babies to arrive!