One of my favorite games is guess the height of the celebrity with Stephen Colbert (he’s 1.8m I’m 1.7m). The only time you can see a celebrity or politicians height is when he meets them on the floor for the first time. Unsurprisingly you will find many “rock stars” are not in the tall vector.
I’ve always taken a 3D dummy with my height into 3D scenes just to get a realistic sense of scale.
Just don’t get me started on celebrities and head size… Alec Baldwin for Christ sake!!