Lauren Bush and David Lauren Lauren Bush and David Lauren

Lauren Bush, the niece of former President George W. Bush, married David Lauren, the son of fashion designer Ralph Lauren, Sunday in Colorado, The New York Post reports.

Bush, 27, and Lauren, 39, tied the knot at the Laurens' 17,000-acre ranch in the Rocky Mountains. The bride walked down the aisle in — you guessed it — a Ralph Lauren gown, and the dress code for the wedding was "black tie with a Western twist," according to the newspaper.

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More than 200 guests attended the ceremony, including the former President and first lady Laura Bush, cousins Jenna Bush Hager and Barbara Bush, Ivanka Trump and former Florida Gov. Jeb Bush. (Lauren Bush is the daughter of George and Jeb's brother, Neil.)

The bride's grandparents, former President George H.W. Bush and first lady Barbara Bush, were unable to attend, but sent a video message that played at Saturday's rehearsal dinner.

The bride will now go by Lauren Bush-Lauren.

The couple met in 2004 and became engaged last year.