you can download the full collection here
https://bergdorfsims.tumblr.com/post/622115632675274753/saint-laurent-ss20-collection-this-set-was
you need these meshes
https://descargassims.tumblr.com/post/185111503256/plaid-pants-female-tyae-hq-mod-compatible
https://waekey.tumblr.com/post/168096368828/gucci-sweater-new-mesh-category-top-women