Yes, it's true, some women maintain their six-pack abs while pregnant and others don't. Women carry babies differently and it's all OK. Australian fitness trainer Chontel Duncan really hit this point home when she recently posted an Instagram picture of her with a friend who is due just four weeks before her—and the difference in their pregnant bellies is astonishing.
In her caption Duncan writes, "Each woman carries different and this most certainly doesn't mean one is doing something wrong or not healthy, etc. We both have healthy growing babies & we both have had incredible pregnancies so far, feeling amazing & full of energy."
She also points out that she's clearly much taller than her friend and is also carrying her first baby, while her friend is on Baby No. 3. And every mom of more than one child knows how drastically differently your body carries each baby. (Hello, baby bump at Day 8!)
At the end of they day, despite what some commenters may have you believe, it's all good. All pregnancies are amazing and that's really the only thing that matters.