Knot, tied in style: Treasury Secretary Steve Mnuchin and actress/producer Louise Linton wed on Saturday night at the Andrew Mellon Auditorium.

The nuptials had a few flourishes beyond your typical rich-people-wedding drill — Vice President Mike Pence officiated, while guests included President Trump and his wife, Melania, and first daughter Ivanka Trump and her husband and White House adviser, Jared Kushner.

The bride, 36, wore a full-skirted gown befitting a princess (albeit one who likes a neckline that plunges nearly to the navel) and heaps of diamonds. It’s the third marriage for Mnuchin, 54, a former Goldman Sachs exec, and the second for the Scottish-born Linton, whose acting credits include a 2009 episode of “Cold Case” and the 2016 horror movie “Cabin Fever.”

Other VIP guests included Commerce Secretary Wilbur Ross and his wife, Hilary Geary Ross; Secretary of Veteran Affairs David Shulkin; White House press secretary Sean Spicer and his wife, Rebecca Miller; and Housing and Urban Development Secretary Ben Carson.