updated 08/30/2011 AT 11:00 AM ET
•originally published 09/05/2011 AT 8:15 AM ET
David Lauren, son of fashion mogul Ralph Lauren, and Lauren Bush, niece of former President George W. Bush, were married Sunday in a lavish ceremony in Colorado, PEOPLE has confirmed.
After meeting in 2004 and getting engaged last year, Bush, 27, and Lauren, 39, exchanged vows at the designer’s 17,000-acre Double RL Ranch (named for Ralph and wife Ricky Lauren) in the Rocky Mountains.
Though the actual ceremony took place on Sunday, the entire holiday weekend was built around wedding festivities, including a picnic and softball game Saturday, rehearsal dinner Saturday night and a post-wedding rodeo scheduled for Monday.
Merging the two families’ fashion sensibilities, the dress code for the wedding was “black tie with a Western twist,” say reports.