"Slimane will assume total creative responsibility for the brand image and all its collections," read a statement released earlier today.
"Hedi Slimane's exceptional talent and understanding of the spirit of Yves Saint Laurent heralds a promising new chapter in the story of the maison," says Chief Executive Officer of YSL, Paul Deneve.
It's a return to the house for Slimane, who was Artistic Director of menswear for YSL back in 2000, before departing to take up the position of head of design at Dior Homme until 2007.
For the past five years the Paris-born designer has been concentrating on his love of furniture design and photography - a passion which YSL confirms that he will continue to pursue "in parallel with his new position."
We're wishing Hedi the best of luck in his new venture.
Take a look at Pilati's final collection for YSL below:
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