Hats and High Tea with Deborah Norville and Diane McInerney

After finding the perfect hats and learning the ins and outs of High Tea protocol, INSIDE EDITION's Deborah Norville and Diane McInerney are ready for tomorrow's royal wedding event.

It's an exclusive look at the feverish, last-minute preparations for the royal wedding at milliner Philip Treacy's studio. Workers are putting the finishing touches on the spectacular hats guests will wear at William and Kate's wedding.    

Treacy, also known as the Mad Hatter, is a celebrated milliner. His studio is where you can find the most spectacular hats for the royal wedding.

Anyone who's anyone wants a hat by Treacy. He's even designing original hats for Barbara Walters, Diane Sawyer, and Robin Roberts.

INSIDE EDITION's Diane McInerney caught up with one of the royal wedding guests trying on her hat for the first time.

"England is the home of the hat, and royals wear hats," explains Treacy.

Treacy's hats are works of art, and McInerney got to try some of them on.  

Norville went on her own search for the perfect hat.

Before leaving for London, she headed to the Manhattan atelier Suzanne Couture Millinery, where Suzanne Newman has been designing one-of-a-kind hats for over 25 years.   

The milliner's salon is filled with an intimidating slew of hats in every conceivable color and configuration.

It was a bewildering search to find exactly the right one. Finally, she found the perfect hat to complete her perfect royal wedding ensemble.

Once in London, she received a crash course in the great English tradition of High Tea, at 4 p.m.
Norville sat down with Liz Brewer, author of Liz Brewer's Ultimate Guide to Party Planning and Etiquette, at Flemings Hotel.

There's a proper way to do everything at High Tea, even a special way of pouring the milk.

"The correct way is to put the milk in after the tea's been poured," says Brewer.

Then you add sugar, stir, and sip…politely, of course.