Katharine McPhee's family is coming to her defense.
"What baby!" he captioned the pic of the trim star, referencing the birth of their son Rennie 10 months ago.
Some followers were unhappy with the 72-year-old songwriter's post, calling it "cringe worthy" for encouraging women to "bounce back" to their slim figures after giving birth.
On Wednesday, McPhee shot back in her own Instagram post, discussing her struggles with her weight for nearly two decades.
"I lost this baby weight without dieting. Zero. Diets are the worst and I’ve had zero pressure from anyone," she shared. "I’ve let me body do its thing and found a great workout. That’s it. And guess what? I’ll probably gain weight again at some point too. Who cares?"
She also suggested that followers "stop being so offended by what people post who have zero impact on your life and move on."
Her stepdaughters – reality stars Erin and Sara Foster – then stepped in to echo the singer's sentiments.
"If I can accept my step mom looking like this, you certainly should be able to," Erin, 39, commented. "The photo wasn’t altered or filtered and she’s had no surgery. You can’t shame someone for feeling cute after a baby whether she’s sharing stretch marks or a six pack. Let her live."
Added Sara, 40: "If you [would have] had cellulite and stretch marks in the photo and the caption was exactly the same we would all be celebrating his post. But you don't and that's not allowed to be celebrated."
Furthermore, Sara pointed out that the "Country Comfort" star has been "working your a-- off at the gym."
"Let's complain about women and husbands who post 3 week postpartum pics with their full body lipo, filters and altering apps that make us all feel like s--t," she continued. "People are crazy."