Sure, why not?!
Whipping off the top half of her white bikini, Millie can be seen jumping off a boat and in to the cool blue waters below in the snap she shared on Friday (1 August).
Wearing nothing but a pair of bikini bottoms, Millie looks like a true water baby to us!
She said: "My favourite place #formentera"
Millie jetted to Ibiza last week and has been partying up a storm on the island.
This snap was taken on nearby island Formentera (think of it as Ibiza's chilled out little sister) just hours after Millie complained on Twitter: "Wow this hangover is really potent."
A trip to the island's peaceful shores sounds like the perfect antidote to a raging hangover, to us!
The night before, Millie donned a H&M dress and some Jimmy Choos for an evening of festivities with some gal pals, her husband Professor Green, and Radio One DJ Nick Grimshaw on the party isle.
To aid the former Made In Chelsea star's hangover, she stocked up on a juice and a very healthy looking breakfast.
It looks like the healthy start worked as Millie was soon splashing around in the sea sans top!
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