The idol posted pictures to her Instagram of the pair in celebration mode, with the first being a set of black and white photos with a backdrop of 'Happy Birthday' balloons, and another set of photos featuring the pair with a birthday cake, and Rosé rocking a party hat too!
One of the posts was captioned "One week ago", referring to Rosé's birthday that was on February 11.
Rosé and Hyeri have been close friends for a while now, and you can even watch them hang out together in one of Hyeri's vlogs from last year!
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