The younger Vanderpump and Sabo exchanged vows at her parents' estate in Beverly Hills.
"It was a breathtaking wedding. Beautiful. Everyone was happy," an eyewitness tells PEOPLE.
"There was a lot of pink, and all the women were required to wear floor-length dresses," the insider adds.
Also in attendance was the bride's four-legged sibling, Giggy, who wore a tuxedo for the occasion.
Lisa Tweeted: "I can't explain the love and warmth that filled the room and our hearts last night."
She later updated: "Unequivocally the most wonderful day of my life."
Lisa's Real Housewives costar Taylor Armstrong, whose estranged husband Russell Armstrong was laid to rest last week, was absent from the ceremony.
Courtesy Lisa Vanderpump