Bartlett wore a wedding dress by Les Habitudes and Hudson wore a Ralph Lauren suit at the ceremony, which was officiated by a Buddhist family friend.
Among the 94 guests were Hudson's actress sister, Kate, her husband, Chris Robinson and their son, Ryder, 2, who served as ringbearer. Hudson's mother, Goldie Hawn, her partner, Kurt Russell, their son Wyatt, 19, and Boston Russell, Kurt's 26-year-old son from a previous marriage, were also in attendance.
A few weeks earlier, Kate Hudson threw Bartlett a girls-only, weekend-long bachelorette party in Las Vegas, complete with goody bags filled with $400 worth of Benefit cosmetics.
Before he bought the ring, Hudson sought advice from his mom and sister, as well as friends such as his former Dawson's Creek costar Katie Holmes. When he gave the ring to Bartlett, it was too big – but she loved it so much she wore the band wrapped with Scotch tape for weeks before taking it in for sizing.
Next up for the couple: quite possibly kids. "I want babies," Hudson told PEOPLE after his engagement. "I think I'll be a great dad." He's already a doting uncle. "I have (Ryder's) picture up on my screensaver."