Warning: Connecting to the blogsite being mentioned in this post is likely to cause you to spend a good chunk of time searching past posts and experiencing amazement, maybe a little nausea, laughter and some nostalgia too.
I found this yesterday on MetaFilter, and got lost for waaaaay to long. The site features pics from catalogs of the 1970s, especially toys and clothes and other odd bits of the past as the writer has been faithfully scanning images onto his page since starting the blog in April 2006.
The blog is Plaid Stallions: Ramblings and Reflections on 70s Pop Culture.
Take the pics, add in some hilarious commentary and you get a good idea of why, during the 1970s I clung desperately onto wearing just blue jeans and shirts with few embellishments (other than all the weird-ass t-shirts I have). Case in point - the arrival of what one catalog called Man Mates. Nope, would not be caught dead wearing that kind stuff even back then, though I do remember seeing a lot of people falling for it.
And I too recalled how, for a while, dressing alike for couples was a big thing. And click on the images to "embiggen".
Go visit Plaid Stallions for much, much more.