Lauren Bush marries David Lauren

(CBS) Lauren Bush, the granddaughter and niece of former Presidents George H.W. Bush and George W. Bush, married David Lauren, the son of fashion designer Ralph Lauren, in a lavish Colorado ceremony on Sunday, according to reports.

The couple tied the knot at the fashion mogul's 17,000-acre Double RL Ranch, outside Tellerude. The dress code for the occasion was "black tie with a Western twist."

Pictures: Celebrity weddings and engagements

The 27-year-old bride, who will go by the name Lauren Bush-Lauren, wore an "intricately embroidered Victorian-style gown" designed by her father-in-law, according to the New York Post. The groom, 39, wore a "vintage Lincoln era-inspired tuxedo."

Guests at the ranch, which is named for Ralph and wife Ricky Lauren, included the bride's aunt and uncle, former President George W. Bush and first lady Laura Bush, cousins Jenna and Barbara Bush and uncle Jeb Bush, the former governor of Florida, according to the Post. Her grandparents, former President George H.W. Bush and first lady Barbara Bush, were unable to attend but reportedly sent a video message that was played during Saturday night's rehearsal dinner.

Members of the Lauren family were also in attendance, according to reports, including the groom's sister, Dylan's Candy Bar founder Dylan Lauren.

Us magazine reports that the bride entered on a horse-drawn carriage. Her parents, Sharon and Neil, who divorced in 2003, walked her down the aisle for the Jewish ceremony.

The nuptials were part of a weekend of festivities, according to People, that also included a picnic and softball game on Saturday and a post-wedding rodeo on Monday.

The couple announced their engagement last year.