For many years, I used to have a 7.25" wrist and nothing less than 40 mm looked right. But somehow my wrist is now measuring 7" and smaller sizes seem to look okay. Who knows it may even be mental but here's a 34 mm on my wrist and no one seems to think it's too small.
This new Le Petit Prince edition in 36 mm is quite intriguing. Unlike IWC's other 36 mm iterations it has no date and gets the 120 hours (5 days) power reserve 32102 movement. And, you probably don't have to rob a bank... $5300... 😉