Katharine McPhee looked phenomenal in a red one-shoulder swimsuit while on New Year’s Eve vacation with her husband, David Foster, at a luxury resort in Hawaii. Katharine exhibited her fantastic figure in a creative swimsuit while enjoying the water and the waves on Wednesday, December 29. She tied her dark brown hair in a bun while enjoying a drink next to the loungers on the beach. She was in an excellent mood and smiling as she enjoyed the ocean.