This is actually a half hour South of L.A. but is worth it:
Stray Cat Vintage Clothing and Music
http://www.yelp.com/biz/stray-cat-vi...umes-fullerton
This is where I resupply my stock of round lens sunglasses for $8 (what Ozzy Osbourne wears and what John Lennon wore)

and is the only place I have found where you can get an original Christian Death
Only Theatre of Pain on 33 and 1/3 vinyl. ($60)
Then down Harbor Blvd. a few blocks East and across the street:
http://www.ipso-facto.com/
This place is more expensive and has less music (only a fraction of the CDs and no vinyl LPs) but carries goth centric fashion where you can buy
off the rack a
coat like this:

or this

and many other delights like these

and these
http://www.ipso-facto.com/brogue02.jpg