From boyfriend’s jeans and shirts, to dad’s shoes, now it’s our grandparents that clearly know what’s up in the style department. After all, their beloved trends are basically going mainstream these days. Grandma dressing is increasing in popularity for fall 2019: Think tweed, knee-high socks, and so on. But grandma isn’t the only one making waves—grandpa is too. Yep, the gram is showing off “grandpa” jeans BIG TIME. ‘The grandpa jean silhouette first cropped up in a noteworthy way last season when brands debuted…
