The three-year-old twins accompanied their father Prince Albert and their aunty Princess Stephanie for their first-ever visit to the annual Monte Carlo circus festival.
This is the sibling's first official outing for 2018.
While Princess Charlene skipped the event, which took place on Sunday, January 21st, the royal dad marked it a raging success.
The group were treated to the traditional delights that come with a circus.
Acts included clowns, trapeze artists and a range of wild animals.
Speaking of his two crown jewels, the Prince mused that they "had the best time!"
Adding they were most pleased "when the giraffe came around. They want to go back."
One circus-goer said, "It was beautiful. They were laughing and surprised. All the music and the lights and animals — it was quite a discovery for them."
Prince Albert and his little ones were supporting his sister, who is the festival's president.
Stephanie also made it a family affair, bringing along her kids Pauline, Louis Ducruet and Camille Gottlieb.
The circus marks their 250th year and if you're in the area - it will be running until January 28th.