The fashion house has soared in popularity ever since the Duchess wore one of their dresses for her engagement shoot with Prince William in 2011 and has since been championed by more edgy names, including the younger Jenner sister.
Take a look at who else has been rocking these cool British designs....
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In February 2016, Kate wore a $230 Reiss blouse for an official engagement as she played editor-for-a-day for the Huffington Post UK.
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With her impeccable style and taste, it's not surprising that Olivia Palermo took a liking to Reiss. She has been photographed wearing their label multiple times over the years, most recently the 'Lavinnia' blazer at Paris Fashion Week in March 2016.
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