ABC News' Bethany Owings and Taylor Behrendt report:
Kate Middleton is the picture of perfection for post-pregnancy.
"I think what Kate has done for new moms has really given them a tremendous gift," thebump.com editor Lori Richmond told ABC News.
The duchess glowed as she debuted her little prince outside St. Mary's Hospital in London earlier this week, and moms around the world noticed that post-baby bump she proudly showed off.
"Even the way she was holding her hands, cradling her belly, really framing it, I think that was shocking for some people to see, but it was wonderful for people to see because that's what moms really look like after they've given birth," Richmond said.
Everything from the style of Kate's dress to the way she carried herself showed confidence, a modern approach notably different from Diana's famous green moo moo.
Many new moms feel a lot of pressure to lose the weight, partly fueled by a tabloid culture that puts every Hollywood mom's body under the microscope after she has a baby.
"I think the pressures to immediately bounce back after birth are out of control today," ABC News senior medical contributor Dr. Jennifer Ashton said. "After delivery, it takes a while for that muscle to contract and that process takes a couple weeks."
ABC News' Bianna Golodryga ventured out in New York City with her son, Jake, to find out what moms really think of Kate's "mummy tummy."
"I feel good that she showed it because that's the reality," one mom in Central Park said.
"I think it's a very cool thing that she did that rather than hiding it," said another at Kidville, a center that provides educational classes and programs for children.
The duchess has turned the focus to the baby, rather than the bump.
"That's really where the time should be spent," Richmond said. "Now worrying about how you look and not succumbing to that pressure to be so perfect so quickly."