The event will be Britain's biggest royal wedding since William's parents, Prince Charles and Lady Diana Spencer, married in 1981.

这场婚礼是继1981年威廉父母查尔斯王子和戴安娜﹒斯宾塞的那场婚礼以来最盛大的皇室婚礼。

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WHEN Prince Charles married Lady Diana Spencer in 1981 millions of Britons partied in public.

当1981年查尔斯王子迎娶戴安娜•斯宾塞女士之时，数百万英国人公开举行派对，以示庆祝。

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Prince Charles and Lady Diana Spencer, June 29, 1981

查尔斯王子和戴安娜·斯宾塞 1981年6月29日

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Nearly 30 years ago, heir-to-the-throne Prince Charles married Diana Spencer in Royal Navy attire, sword included.

FORBES: Wedding Attire Fit For A Prince

But TV audiences did not witness an exchange of vows until 21 years later, when Prince Charles married Lady Diana Spencer.

BBC: Royal weddings: A brief history

Prince William has announced his engagement to Kate Middleton, setting the stage for a royal wedding expected to be the biggest event of its kind since the wedding of Prince Charles to Lady Diana Spencer nearly 30 years ago.

BBC: Royal wedding 'should be low key'