) -- "The Royal Wedding" is dominating search engines sites as people from around the world tuned in Friday to watch the matrimony between England's Prince William and Catherine Middleton at Westminster Abbey.

#RoyalWedding is a promoted trending topic on Twitter as people join the global conversation about the royal couple's big day. Terms such as "Queen Elizabeth," "Prince Charles" and "Kate Middleton wedding dress" are hot Internet searches as interested viewers hope to get more details on what the royal guests are wearing.

Live coverage of the official event was available from a number of outlets, starting as early as 1 a.m. EDT. Coverage is expected to continue for hours following the ceremony.

U Stream offered a

list of sites

from which viewers could watch the event live on their computers around the world.

The U.K. is observing a national holiday because of the wedding, and the London Stock Exchange is closed.

The chatter on Main Street (a.k.a. Google, Yahoo! and other search sites) is always of interest to investors on Wall Street. Thus, each day, TheStreet compiles the stories that are trending on the Web, and highlights the news that could make stocks move.

--Written by Theresa McCabe in Boston.

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