The Royal Couple: Call Us Prince William and Princess Catherine

Vanity Fair

Prince William and Kate Middleton adorn the cover of the July issue of Vanity Fair, and although their official title is the Duke and Duchess of Cambridge, they'd rather be called something else.

The royal groom made it clear at their April 29 wedding that he will continue to be addressed as Prince William, and that means that Kate by default will be Princess Catherine, according to Vanity Fair writer and ET royal correspondentKatie Nicholl.

But will Kate's moniker shake up some family hierarchies? For example, the Countess of Wessex had wanted to be known as Princess Sophie, but had been forbidden by the Queen.

Find out everything you didn't already know about the royal wedding and Will and Kate in the new issue of Vanity Fair -- on newsstands in New York and L.A. on Thursday, June 2, and nationwide and on the iPad June 7.