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Struggling to conceive a child naturally when Giuliana was diagnosed with breast cancer in 2011, the couple suffered through multiple rounds of failed IVF before welcoming son Duke via surrogate in 2012. "We're husband and wife, but we're also best friends, and it's funny because a lot of people, when they have kids, they put the baby first, and the marriage second," Giuliana tells Us. "That works for some people. For us, I find, we put our marriage first and our child second, because the best thing we can do for him is have a strong marriage."