Lively, 27, who welcomed her first child with Ryan Reynolds last December, shared a photo of a bowl of fresh strawberries atop a matching pink diaper decorated with the the same fruit.
"...One of these bunches of strawberries is about to be filled with poop," the Age of Adaline actress wrote. "#LetsBeHonest @jessicaalba knows how to make even poop look good..."
This isn't the first time Lively's made fun of her baby girls' poop on social media. Several weeks ago, she sent a tweet to her husband filled with very-telling emojis.
@VancityReynolds ????????????— Blake Lively (@blakelively) March 4, 2015
Both A-list moms Lively and Alba, 33, have similarly founded Goop-like empires of their own. In 2011, a health-focused Alba used her personal experiences as a mom (to daughters Honor, 6, and Haven, 3, with husband Cash Warren) to conceive her all-natural, toxin-free baby brand, The Honest Company.
"Hearing how we change families' lives and have a positive impact [means so much]," Alba said at a Self panel last October. "I posted a photo of me at the office on Instagram, and a mom wrote, 'I have a 5-year-old daughter with severe eczema who now, because of your products, can wear shorts and run around like a normal kid.' To me, that's what it's all about."
Gossip Girl star Lively, meanwhile, launched her lifestyle site Preserve last fall, even using it to announce her pregnancy. The star has previously described the project as "part magazine, part e-commerce hub, part philanthropic endeavor,” calling out her favorite artisans and designers to help promote their small businesses.