Just last week, Swanepoel cradled her burgeoning belly in a blue dress (how fitting!) and wished her pal and fellow mama-to-be Behati Prinsloo a happy mother's day.
"Happy almost mama's day to us," she wrote. "So much love already."
The 27-year-old South African beauty is expecting her first child with fiancé Hermann Nicoli later this year. Meanwhile, Prinsloo is also expecting her first child, a girl, with husband Adam Levine.
“I'm ready to be a dad,” Levine told ET last month. "You're born to be a parent, that's what we're here for, really. All the other s**t is great, but it’s not what we're here for.”
"When you are doing this for the first time, everybody loves to tell you what you should be doing," he added with a laugh. "So, we're kind of tuning a lot of it out and we're just going to do it how we do it."