As you can see from the video, the audience at the event cheered loudly as soon as they noticed the earmuff-clad infant.
After the show, Martin posted on Instagram: “I can’t believe I am waking up to headlines with me and my daughter in them for doing something I do every day.”
“I’m so grateful to be able to share this message and hopefully normalise breastfeeding and also show others that women CAN DO IT ALL!” she added.
“But to be honest, the real reason I can’t believe it is a headline is because it shouldn’t be a headline! My story of being a mother and feeding her while walking is just that,” wrote Martin.
She landed a spot in the top 16 of an open casting in the show at W South Beach hotel.
Sports Illustrated swimsuit editor MJ Day says it was a spur-of-the-moment decision.
“When I was talking with the girls backstage prior to the show beginning, I saw that Mara’s baby was sleeping and peacefully nursing,” she tells Sports Illustrated. “I asked Mara if she would want to walk and continue to nurse. She said ‘Oh my gosh, yes!’”