(CNN) An Oregon woman was told she couldn't give birth herself, so her twin sister offered to be her surrogate. Months later, the sister gave birth to two babies -- twins.

Whitney Bliesner's doctors had told her the only way she could have children was through surrogacy, but she never expected her sister to offer her womb.

But Jill Noe, a former college basketball star who is Whitney's twin, was insistent. She wanted to make her sister's dreams of motherhood a reality.

In June, Noe gave birth to her sister's own set of twins , a boy and a girl, just days ahead of their shared 35th birthday.

"It's the best gift that I could ever ask for," Bliesner told CNN affiliate KNXV.

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