Getty / Instagram @haileybieber Composite

Hailey Bieber ’s Rhode empire is thriving -- and she’s proving she can sling skincare any way she pleases ... even if that means flaunting it in a bikini.

Peep these cheeky shots -- Hailey dropped a sizzling IG dump, flashing her bronzed bod (and booty) in a black 2-piece while slipping in some smooth Rhode plugs.

Hailey’s clearly mastered the IG hustle ... locking down every angle and even making it look like a casual "Oh, I'm just picking outfits" moment.

Safe to say ... JB ’s probably losing his mind over his wife’s fire pics!

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