David Foster's Daughter On His 35-Year Age Gap Marriage With Katharine McPhee: "They Are Happy"

Sara Foster defended the couple while describing Katharine as more of a "sister" figure than a traditional stepmother.

Jul 1, 2026 2

David Foster's Daughter On His 35-Year Age Gap Marriage With Katharine McPhee:
Sara Foster defended the couple while describing Katharine as more of a "sister" figure than a traditional stepmother.
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