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Katherine McPhee showed off her husband David Foster’s cheeky response to a flirty message he sent her on Tuesday on her Instagram Story.

The 37-year-old musician sent Foster, 71, a video of himself in blue lingerie on a bed.

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“I am an underwear model now,” McPhee wrote in the text message exchange.

“Wava wava-voom hot mom – I tried a while ago but you’re obviously too busy to part [crying laughter emoji]. U look amazing!!! Wow!!!” Foster replied.

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Katherine McPhe, David Foster smooch on dinner date after welcoming son

McPhee and Foster got engaged in 2018 after dating for less than a year. The couple tied the knot in 2019 in a ceremony in London and welcomed their son Renee earlier this year.

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The “Over It” singer previously revealed that she was “hesitating to have a relationship with Foster because of the couple’s age difference” during an appearance onDr. Berlin’s Informed Pregnancy Podcast

“It took me a while to really come to a real serious relationship because I was so worried about what people would think, and also I wasn’t there yet,” she said.

“I was single for the past year so I was still in that kind of world, and I’ve known him for so long, and I knew he really liked me. It took me a while.”

Foster has five adult children from previous relationships. McPhee and Foster first met in 2006 when McPhee was a contestant on the fifth season of “American Idol” and Foster was a mentor on the singing competition series.

McPhee is the fifth wife of a Grammy winner.

Granthshala News’ Jessica Napoli contributed to this report