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Andrew Parsons - WPA Pool/Getty Images
2018
The duchess sports a green Catherine Walker coat.
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KGC-178/STAR MAX/IPx
2017
The Duchess of Cambridge wears a double-breasted forest green Catherine Walker dress coat with black trimmings and a matching green hat.
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Anthony Harvey/Getty Images
2015
The duchess wears a navy Catherine Walker coat, paired with a brown hat and a shamrock brooch.
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AP Photo/Kirsty Wigglesworth
2014
The duchess sports a green Hobbs belted coat.
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ADRIAN DENNIS/AFP/Getty Images
2013
Then pregnant with her first child Prince George, the duchess wears the same green Emilia Wickstead fit-and-flare dress coat she wore in 2012.
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Samir Hussein/WireImage
2012
The Duchess of Cambridge wears a green Emilia Wickstead fit-and-flare dress coat.