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Is the card trying to communicate something else besides the fact that the Blackstocks have HBO? Clarkson is currently pregnant with her second child , and Winter is exactly the sort of name one might choose if their other kid is named River. If our math is correct, the baby is actually due this winter. And why else would "Blackstock" be lingering just under the "Winter is Coming" copy?We're calling it: Baby Winter is coming. Unless they name it Saint Blackstock, in which case, this conversation never happened.