Pretty much American Apparel's Lingerie and Hosiery sections.

Really like leather catsuits on girls. And really like tight jeans and skirts and stuff.

So many fetishes I could fill a book but just a few:

Women:
Flimsy dresses giving a hint of curves underneath
Tight dresses showing curvy butts and rounded boobs
Short shorts showing pussy mound and a hint of bum cheek
Tight denim jeans clinging to every curve of an arse
Tight white jeans ........mmmmmmmmmm
Low slung jeans
Crop tops showing a lovely flat abdomen
Sexy brief bikinis
Thongs
etc etc.......

Men:
Low slung jeans.
Speedos or brief swimwear - preferably silky and smooth showing a bulge in front and a nice curvy butt at rear.
Sexy underwear - briefs, thongs, low hipsters.

Me:
I get horny wearing sexy underwear or tight brief swimwear.
Or if its warm I go commando with loose shorts so my cock can swing about freely and I am soon feeling horny!!

Jeans, briefs, thongs, socks, flip-flops & jockstraps.