Well, Vancouver's not known for shopping, thats for sure...but highclass trash pretty much summed it up for ya...
Just wanna add that Bruce's owner have opened another guerilla type store on Homer/Smithe called Komakino; they continue to carry on the Belgian Antwerp moody aesthetic like Ann Demeulemeester, Yohji, Costume Nationale, Martin Margiela, Dark Shadows by Rick Owens, Raf Simons...worth checking out for sure...
Also, Richard Kidd is great to scoop up some cool stuff (the Undercover stock is yumy yummy

) also their own RichKidd line (esp the hoodies) is also exceptional, Tsubi, Acne skinny jeans r there too. For women, Balenciaga Le Dix and Stella McCartney fill up their loft beautifully...
As for Dior Homme, I think only Leone carries it, along with lotsof other high-end, more well-known brands, same as Holt Renfrew (which has Marc by MJ for those who r interested

)
Moreover, Gastown is great to find local design(as listed by highclass trash) and vintage (much cheaper vintage I might add) clothes ...some more stores such as One of a few which just opened in Nov on Water st, cute, small space with interesting clothes, unfortunately womenswear only...not a lot of menswear in Gastown for sure, but Mintage and Deluxe junk are two cool vintage shops that have extensive selections for men (for ladies who r into the baubles, bling bling, check out deluxe junk's selection of vintage jewelleries...they are cool, as I've seen Goldie Hawn and Rebecca Romijn there buying old fur and rocks regularly

)...
Go across to South Granville after the bridge, u find more stores resemble Robson st...Caban, Zebra club, DKNY, but also check out Bacci's; they carry Chloe, JPGaultie, Valentino Red, Dries Van Noten...etc (women only)
Kitsilano on West 4th is also good fpr trendy shopping...Gravity Pope is practically the most diversed shoe boutique in VCV, also Moule, Fab, Highend clothing, Liquid, M.M.K, Nacional clothing (lots of menswear)
Damn, I sounded like a tour guide, hehe

hope it helps