You start to notice prominent cheekbones. And then you just can't unsee them, they're everywhere. And you start to compare them to Hannu's Lalli's.
You overall start to compare people to the comic cast.
That said:
I've seen the almost perfect Lalli today, everything (height, nose, skinny-ness, cheekbones) was right, save for the hair (which was short and blonde and far from the stylish white-ish mess that is Lalli's mane), but I needed to catch my train, so I couldn't observe any possible cat-like behaviour...