Well, not celebrities but TV shows and game shows where they appear.
Edit: I’m sorry to any Brits that feel offended. It’s not a criticism of British dental care. I think you are maybe taking a shower thought a bit too serious. Also I’m not American but Scandinavian design though my teeth must be empire.
Fascination with teeth is and has always been weird to me.
Nothing wrong with most British teeth I’ve seen. But I don’t fixate on it.