The difference between the Duchess and Lady Celebrity

The editor of Chi seems to think the Duchess of Cambridge is no different from ordinary celebrities. Here are some differences which disqualify her:

Celebrities seek publicity as a means to an end.
Being out of the public eye lowers their profile and loses them money.
Commercial incentives de-sensitise their concern for ‘privacy’.
Celebrities like Lady Gaga & Rihanna commodify their public personas.