"@nickhollidayco captured this photo of me getting ready yesterday to shoot the next installment of my #mblmxtess @penningtons collection, and it reminded me of @gisele's iconic photo breastfeeding on set," she wrote. "Working moms come in all shapes, sizes, colors & creeds! #normalizebreastfeeding #workingmom #whorunstheworld."
In December 2013, Bundchen posted a similar pic of her breastfeeding daughter Vivian, who was just one at the time. "What would I do without this beauty squad after the 15 hours flying and only 3 hours of sleep #gettingready," she captioned the photo.
Holliday and Bundchen aren't the first famous mothers to share breastfeeding pics on social media. In fact, Alyssa Milano has spoken out in defense of such images after receiving a bit of backlash for her own breastfeeding posts. "I think people are more comfortable sexualizing breasts than relating them to what they were made for, which is feeding another human," the mother of two told ET.