“Everything that’s old is new again” is a common refrain, but it’s true. From chokers to wide-leg pants, it’s like back to the future in my Amazon shopping cart. High-fashion designers in particular are making a major case for a return to the ’70s, which was a wild decade full of disco and revolutions. In the following gallery, see all the retro trends that are coming back into style and find out where you can shop the pieces for yourself.