Katharine McPhee was seen in casual wear as she stepped out in Los Angeles on Monday.The American Idol vet had on a black sweatshirt and matching sweatpants as she wore her dark hair pulled back into a low bun with sunglasses on her head.It has been almost one month since the 36-year-old singer and her 71-year-old husband David Foster have become proud parents to a 'healthy baby boy.' Back in the mix:Katharine McPhee was seen in casual wear as she stepped out in Los Angeles on MondayThe star had on trendy Grey Goose sneakers and was also flashing her large diamond engagement ring.In February her spokesperson told People magazine: 'Katharine McPhee and David Foster have welcomed a healthy baby boy.
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