Earlier today the realty star took to Instagram to share a snap from Sri Lanka (jealous? us?!) but it wasn't the stunning scenery or her incredible gym-honed abs that caught our eye first - oh no.
In fact, it was Tiff's gorgeous scallop edged bikini that we were immediately lusting after - and we now know where you can get it!
After fans, followers and fashionistas alike took to the comments section to ask where on earth Tiff had snapped up her cutesy two-piece, she altered her caption and revealed that it's actually from Boohoo.
Yep, that's right. Chelsea resident Tiffany gave all of her designer cozzies the elbow in favour of this cheap as chips number which you can grab for £18 - and she looks utterly fabulous in it.
Fierce Ms. Watson - who posed up a storm in the picture - teamed her bikini with a simple pair of Ray Ban wayfarers and oozed edgy vibes thanks to her dishevelled, mussed up bob which is also pretty new, FYI!
Can she get any hotter?
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