We are used to seeing Queen Máxima of The Netherlands [1] looking polished to perfection, thanks to her royal wardrobe [2] full of showstopping gowns, eye-catching jewels, and superhigh heels. So when she stepped out in a casual (yet equally stylish) ensemble this week while on a working visit to Indonesia, we were excited to examine every part of her outfit.

Leaving the crown jewels behind, the Argentina-born royal opted for a laid-back ensemble featuring a boho-inspired printed skirt and pale blue blouse while she met with farmers in Sumatra's Lampung province. But it was her cool flat sandals that caught our attention. While slides [3] have been in style for a while now, Máxima's bold black pair gave the sleek shoe an unexpected twist. Steal her easygoing look by shopping our roundup of similar blue slides now!