Victoria's Secret model Miranda Kerr, 34, and Snapchat CEO Evan Spiegel, 26, are marrying in Southern California, People magazine reports.
Guests were reportedly spotted arriving at Spiegel's L.A. home ahead of the "lavish and classy" wedding and reception later on Saturday evening, a source said.
Only about 40 guests were expected for the intimate ceremony.
The couple first met in 2014, and were seen on a date in June 2015. Kerr announced her engagment to the billionaire on Instagram on July 20, 2016, with a closeup of her mega-sparkler and the caption, "I said yes!!!"
Kerr, who was previously married to Orlando Bloom (with whom she has a son, Flynn) from 2010 to 2013, told The Times of London that she and Spiegel were waiting until after they were married to have sex, saying, "My partner is very traditional. We can't... I mean, we're just... waiting."