Alistair Carr is leaving Pringle of Scotland.
The sartorialist - who had previously worked at Balenciaga - was appointed the British label's design director last March following the departure of Clare Waight Keller but has decided to move on.
Pringle of Scotland's future collections will be created by its existing in-house team.
Thebrand's CEO Jean Fang told WWD: "I want to thank Alistair for all his great efforts and contributions at Pringle. We will miss him, and we wish him all the best in his future endeavours."
Fang described Carr's departure as a "mutual decision" and also said Pringle will show its forthcoming ready-to-wear offerings via presentation rather than on the catwalk.
Carr will still art direct the brand's autumn/winter 2012-13 campaign and will show his spring/summer 2013 menswear collection in mid-June.
The designer joined the brand in March 2011, having also worked at Marni, Cacharel and Chloe. He also showed his own label at London Fashion Week for three seasons.
His next move is not yet known.
The label's latest campaign was fronted by Oscar-winning actress Tilda Swinton.