Pants with the big bell bottoms was extremely popular in the 70's.
I LOVED bell bottoms!  My mom called them elephant ears...I'm not sure why.
There was a lot of tie dye clothing in the 70's, they would add beads to shirts and there was also stonewash headbands.
And tie dye is back.  I'm so happy about that.  Tie dye is a cheerful fashion, don't you agree?
Disco was a huge thing in the 70's as well, the flared pants.
I was too young for disco, but some of the songs are great.  The Bee Gees and Donna Summer were awesome.
Star Wars movie came out in the late 70's 
Star Wars and funky, groovy clothes.  What more could you ask for?
The short shorts with the tube socks was my favorite.
Ha Ha.  I just pictured that in my head.  I don't know what people were thinking.
The game Red Rover was invented back in the 70's, I think kids still play the game to this day.