I can just see the tabloids setting up for the next round of Kate vs Chelsy "news":
First, based on the Daily Mail comments, there will be angry retorts from Kate's friends. Somthing along the lines of how dare Chelsy to put her down for being middle-class.
Next, there will be taunts of who will get her prince to the alter first.
If only Kate gets to wear the tiaras, the headlines will be
Kate's Sweet Revenge. If Chelsy gets her tiaras, the headlines will be
Told Kate So. If both do, well, Kate would still outrank Chelsy and gets to gloat. That's all before the fashion comparisons kick in.
The tabloids can't loose in any of the scenario.