She's married to DJ Sunnery James, the pair have two children, 4-year-old Phyllon and 8-month-old Myllena Mae.
And she just shared a photo of herself using a breast pump on Instagram.
"Daily routine! I'm promoting breastfeeding, it's the best for your baby when possible! #breastfeeding #breastpump #breastfeedingmom #breastfeedingawareness" reads the Instagram caption.
Kroes isn't the only famous lady to show off her breastfeeding skills on Instagram. Last year, Gisele Bundchen shared this pic:
And so did model Jaime King.
In fact, Instagram breast-feeding selfies have their own hashtag: #brelfie.
Plus, there's an Instagram account called Normalizing Breastfeeding that's all about promoting breastfeeding as healthy and natural.
Maybe it'll make it to the cover of Vogue one of these days, too.