Pippa Middleton

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Guests filled Westminster Abbey to honor the late Sir David Frost this morning.

Everyone from royals to Hollywood stars showed up to pay tribute during his memorial service.

Pippa Middleton was seen paying her respects to the beloved broadcaster. She arrived wearing a demure navy dress paired with matching heels and a clutch.

The beautiful brunette walked into the abbey alongside three close friends and smiled to photographers before the service.

Princess Beatrice and Sarah Ferguson were also among the star-studded guest list.

The mother and daughter weren't the only members of the royal family present, however, as Prince Charles and his wife Camilla Parker Bowles were also seen inside.

Princess Beatrice of York, Prince Charles, Camilla

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Sienna Miller showed off her unique sense of style in a cream-colored dress and multicolored heels.

The blond actress arrived solo to the morning event and greeted several guests before stepping into the abbey.

Model Lara Stone and her husband, David Walliams, were also on hand to pay tribute to the former TV star, who passed away last September.

Frost died from a heart attack while on board a cruise ship sailing from England.

The 74-year-old was on the Queen Elizabeth cruise ship, where he was due to give a speech, his family confirmed at the time.

The British journalist was perhaps most famous for drawing an apology out of Richard Nixon following the Watergate scandal during his series of interviews with the former president in 1977.

Sienna Miller

Chris Jackson/Getty Images

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