Fashion can sometimes be a crazy industry. One year this style is in and then the next year it is out. But just keep your outfit for several years and you will find that it will just come back to haunt you again.
Seriously, the 70s fashion is coming back now. You can see maxi dresses and those colorful printed mini dresses filling up racks.
If you have the opportunity, why not browse your mother’s outfits from the 70s? You will surely find something there that you can use now. And that would be real vintage clothing in your hands