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Twins (offspring)

Woman gives birth to twin sister's baby

Mary Bowerman
USA TODAY Network
Twins have a unique bond, but for identical twin sister’s – Dawn Ardolino Policastro and Allison Ardolino Dinkelacker –  that bond goes above and beyond what most people are willing to go through for a sibling.

Twins have a unique bond, but for sisters Dawn Ardolino Policastro and Allison Ardolino Dinkelacker, that bond runs especially deep.

In 2009, when Allison was 30 weeks pregnant with her first child, she was diagnosed with stage-3 breast cancer, Mineola, N.Y., Patch.com reported. Doctors said she needed to begin chemotherapy immediately, and her son was delivered through an emergency C-section at 31 weeks.

Six years later, Allison was cancer-free but unable to have another child. Her identical twin, Dawn, accompanied her to a doctor's appointment and made an unlikely proposition, according to Patch.com.

"We sat in my oncologist's office, and he said to me ... 'You will never be able to carry another child,'" Allison wrote in a Facebook post. "Well before [the doctor] even finished his sentence, Dawn jumped in and said, 'It doesn't matter because I am going to carry their child,'"

Dawn served as a surrogate mother and gave birth to Hudson William Dinkelacker on Aug. 5. He weighed 8 pounds, 13 ounces and was 20.5 inches long, according to Patch.com.

Before the baby's birth, the sisters, who live three blocks away from each other in Mineloa, took photos with a professional photographer. The photo shoot quickly went viral, and had almost 80,000 likes as of Wednesday afternoon.

"How can we begin to thank you for the tremendous generosity and sacrifice you have so willingly bestowed these last few months?" Allison wrote in the post. "You have given us not just the fulfillment of a wish we've had for the last six years, but a whole new life, and a family of four we thought we'd never have."

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