Jeff Bezos and Lauren Sánchez hosted an 'epic' pajama-themed wedding party complete with performances from Usher and DJ Cassidy on Saturday, June 28, a source exclusively tells PEOPLE. The 'best dancer award goes to Jessica Alba,

Jeff Bezos and Lauren Sanchez 's three-day wedding extravaganza in Venice has officially kicked off with a star-studded soiree that boasts a lengthy guest list of celebrities, from Ivanka Trump and Kim Kardashian to Tom Brady and Orlando Bloom.

The dress, which was in elegant, rosy hues and adorned with beads, sequins, and more sequins, served as a final dramatic touch to the festivities.