Most recently, he's rounded out his uber cool cast of musicians/models like Beck and Edie Campbell with It-girl/up-and-coming musician Sky Ferreira (who was front row at his PFW debut and wore pre-fall look 7 while performing on Jimmy Fallon last week).
The 20-year-old stars, pouty and cat-eyed, in Slimane's pre-fall look book, which is pretty much shot entirely in black and white (which is fine since the entire collection is black).
It's not Ferreira's first modeling gig--she's covered V, posed for under-the-radar indie mags, and starred in an Adidas Originals campaign. She, like Beck, has even posed for Slimane's lense pre-SL, and for her latest EP cover artwork.
It seems pretty clear that musicians of all ages (remember that Slimane created custom Saint Laurent pieces for Keith Richards) will continue to feature heavily in Saint Laurent's branding.