Most celebrities that have a consistent standard of grooming and dressing probably blend in by just changing signature appearance traits, amirite?

We do, indeed.

I feel a lot of women celebs can do this.
No makeup messy hair and sweats and Jessica Alba could prolly walk right past you at Target and you'd just think it's some local hot mom who looks like her. Lol

Some of them blend in pretty good without all the pizzazz. They look mysteriously similar to someone you know, but you can't quite place it. Unless it's someone like Bruce Willis.