The blonde supermodels gave us a glamorous case of déjà vu as they stepped out in the same Michael Kors number.
And with its figure-hugging pencil shape, sweetheart neckline and chic leaf print, we're not surprised both ladies snapped it up!
Rosie was the first to showcase her strapless frock back in April, as she attended a Vogue dinner in honour of Michael Kors himself.
A thin leather belt highlighted her tiny waist, while a pair of white stilettos by Jean-Michel Cazabat elongated her enviable pins.
Fast-forward to yesterday (31 July) and Heidi Klum sizzled on the America's Got Talent red carpet, sporting the exact same frock.
Like Rosie, Heidi added a waist-cinching belt and loose tumbling curls, but chose to cover her tootsies with black strappy sandals instead.
While both ladies looked gorgeous, our vote goes to Rosie - we just can't get enough of her raspberry pout and lust-worthy heels!
Let us know what you think by voting below!