The 37-year-old musician had despatched Foster, 71, a video of herself posing in blue lingerie on a mattress.
“I am an underwear mannequin now,” McPhee wrote within the textual content message alternate.
“Vava VavA-voom Sizzling mother — I attempted u a bit in the past however u are clearly busy stripping [crying laughter emoji]. U look superb!!! Wow!!!” Foster responded.
McPhee and Foster bought engaged in 2018 after relationship for lower than a 12 months. The couple tied the knot in a London ceremony in 2019 and welcomed their son Rennie earlier this year.
The “Over It” singer beforehand revealed that she was hesitant to enter right into a relationship with Foster as a consequence of the couple’s age gap throughout an look on “Dr. Berlin’s Informed Pregnancy Podcast.”
“It took me awhile to type of come round to essentially need to have an actual severe relationship as a result of I used to be very involved with what individuals would assume, and likewise I simply wasn’t there but both, too,” she mentioned.
“I had been single for the final 12 months so I used to be nonetheless in type of that world, and I’ve identified him for thus lengthy, and I knew he actually favored me. It took me awhile.”
Foster has 5 grownup youngsters from earlier 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 competitors collection.
McPhee is the Grammy winner’s fifth spouse.
Fox Information’ Jessica Napoli contributed to this report