The pregnant mother-of-one has hit out at those who obsess over how quickly a woman can shed her baby weight, describing the fascination as "so celebrated" and "so unfair".
Speaking to Australian news outlet Sunrise, Lively said, “I think a woman’s body after having a baby is pretty amazing. You don’t have to have be Victoria’s Secret-ready right away.
"You’ve just done this incredible miracle that life has to offer.”
Lively, 28, who already has a one-year-old daughter named James with husband Ryan Reynolds, 39, is set to become the source of post-baby-body scrutiny yet again when she gives birth to the couple's second child.
But the actress, who stars in the newly released shark horror film The Shallows, hopes that eventually womens' bodies will stop being the focus of such obsession.
“You gave birth to a human being. I would really like to see that celebrated," she added.