Heard of it? I hadn't until I caught an item on Woman's Hour this morning. Apparently it's a unisex fashion trend, not quite grunge but about undistinguished clothes. It's said to be 'a reaction to a fashion oversaturation resulting from ever faster-changing fashion trends.' The speaker mentioned jeans, hoodies, sweatshirts, sneakers... Then I looked at what I was wearing: cropped denims, denim sneakers and a turquoise tee-shirt. And until that moment I hadn't realised that I was 'on trend'.
en.wikipedia.org/wiki/Normcore
Parents-in-Law. What do/did you call them?