Inside the extravagant wedding of Treasury Secretary Steve Mnuchin and 36-year-old actress Louise Linton

Treasury Secretary Steven Mnuchin, 54, married his 36-year-old fiancée Louise Linton on Saturday in front of a stunning list of Washington insiders and Wall Street elite.

It is Mnuchin's third marriage and Linton's second. Mnuchin, a former Goldman Sachs executive, met Linton, a Scottish actress, at a wedding in 2013, and the two got engaged in 2015.

See who was there in these photos from the star-studded event:

Editor's note: An earlier version of this article incorrectly referred to Treasury Secretary Steven Mnuchin as a billionaire. Recent estimates put his net worth at about $300 million.

President Donald Trump and first lady Melania Trump were at the wedding. Here they are leaving the White House on Saturday.

The first lady wore a Gilles Mendel silk chiffon gown with Manolo Blahnik pumps.

Vice President Mike Pence and his wife, Karen, waved from a limo en route to the ceremony.

Pence then officiated the wedding.

The White House press secretary, Sean Spicer, and his wife, Rebecca Miller, were there. It looks as if a wedding planner was telling them where to go in this photo.

White House advisers Ivanka Trump, the president's daughter, and her husband, Jared Kushner, were spotted in attendance, too.

Many Cabinet officials were present. Here's Secretary of Veterans Affairs David Shulkin in a powder blue bow tie.

Housing and Urban Development Secretary Ben Carson, left, talked with US Trade Representative Robert Lighthizer as they arrived.

Wall Street tycoons were there, too. Here's Thomas Barrack, the founder of Colony NorthStar.

Commerce Secretary Wilbur Ross was there. He accidentally let it slip that Mnuchin was getting married earlier in the week when he introduced his friend for a speech.

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Also reportedly in attendance: national security adviser H.R. McMaster, Agriculture Secretary Sonny Perdue, Environmental Protection Agency administrator Scott Pruitt, Sen. Orrin Hatch of Utah, House Majority Leader Kevin McCarthy, former Mayor Rudy Giuliani of New York, and Jim Donovan, a Goldman Sachs banker who withdrew his name from consideration as Mnuchin's deputy secretary.

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The bride wore a custom gown by Toronto designer Ines Di Santo, who was also in attendance. Di Santo's off-the-rack gowns typically cost thousands of dollars.

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Linton reportedly wore a pile of jewelry, including a tiara, a diamond necklace, pearl drop earrings, multiple diamond rings, diamond bracelets, and, of course, her giant, oval diamond engagement ring.

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The ceremony was held at the Andrew W. Mellon Auditorium, which used to be called the Treasury Department Auditorium, in Washington.

Linton's acting credits include the 2007 movie "Cabin Fever." Mnuchin, who also ran a successful hedge fund before joining the Trump administration, has producing credits on blockbuster movies like "Mad Max: Fury Road" and "Suicide Squad."

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