India, June 16 -- A UK couple, Rohan and Kate Silva, faced multiple heartbreaks after enduring 20 unsuccessful IVF procedures before turning to surrogacy. But in a surprising twist, 40-year-old Kate also became pregnant naturally. Given their difficult fertility history, the couple decided to continue with both pregnancies.

Miraculously, both pregnancies ended up being successful and the couple welcomed rare "twiblings", siblings born just four months apart, a report by The Times said. The close-in-age babies born this way are sometimes called "Californian twins," blending the terms twin and sibling.

Kate gave birth first, followed by their surrogate Ava, who delivered a healthy baby four months later.

Rohan shared that people are ofte...