Samantha Blogs About Royal Wedding Fever in London!

London calling! Our own Samantha Harris is standing in front of the Thames and Big Ben to deliver the dish on the "possible, impending royal engagement" between Prince William and Kate Middleton.

This week, ET is with the U.K.'s hottest royal watcher to get the inside scoop on how William fits in with the Middleton family and how they'll be together if they take their relationship to the next level. Plus, does William call Kate's dad "dad"?

Also this week on ET, Samantha speaks with the brother of the late Princess Diana -- and William's uncle -- Charles, 9th Earl Spencer, to find out what may be in store for the royal wedding!