After Kourtney Kardashian and Travis Barker said "I do" (again!) in Portofino, Italy, they got the party started with their friends and family at an over-the-top wedding reception at Castello Brown.
Despite several long days of wedding festivities, the newlyweds partied until 3 a.m.
According to a source, Andrea Bocelli kicked off the reception with a performance of "I Found My Love in Portofino," which was followed by "cabaret-style acts orchestrated by Dolce & Gabbana."
"Domenico Dolce called us last week and asked if we could create a unique surprise for his friends Kourtney and Travis, and all the Kardashian family," Bocelli and Matteo told PEOPLE in a joint statement. "Portofino is in everyone's heart and we replied positively to such a lovely moment in their life. We wish them all the best for their future together."
Later on, the drummer's son Landon gave a speech before DJ Cassidy spun tunes and got everyone onto the dance floor. During the night, Machine Gun Kelly did an "impromptu performance" of his hit, "bloody valentine," while his fiancée Megan Fox cheered him on, adds the source.
Alabama Barker Instagram
"Cassidy played 'All the Small Things' and the whole Barker and Kardashian-Jenner clan danced together," says the source. "The sisters also all had a cute moment singing and dancing along to 'Girls Just Wanna Have Fun.'"
Barker's daughter Alabama went live on Instagram at the tail end of the reception and gave fans a glimpse of her dad and Kardashian celebrating their new union.
For her post-ceremony look, Kardashian slipped into a sheer black lace mini dress and matching short veil.
Alabama Barker Instagram Kourtney Kardashian and Travis Barker
Alabama Barker Instagram Travis Barker and Kourtney Kardashian
The groom was shirtless underneath a black blazer, and the couple later donned matching "Mr. Barker" and "Mrs. Barker" leather jackets as they kissed and slow-danced to Bill Withers' "Lovely Day." (DJ Cassidy was spotted spinning tunes in Alabama's footage.)
Shortly after watching her sister say "I do," Kylie Jenner shared some videos of the reception food, which included freshly made pasta and made-to-order cannolis.
For the ceremony, Kardashian — who held a simple bouquet of red and white roses — opted for a white Dolce & Gabbana mini dress and a dramatic, cathedral-length veil. Barker wore a sleek black suit and bowtie, also by the designer.
The couple's children — Kourtney shares sons Mason, 12, and Reign, 7, and daughter Penelope, 9, with ex Scott Disick, while Barker is dad to son Landon, 18, and Alabama, 16, with ex-wife Shanna Moakler, and remains close to 23-year-old stepdaughter Atiana — were all in attendance for their big day.
RELATED VIDEO: Kourtney Kardashian and Travis Barker Are Legally Married: Source
Ahead of Sunday's festivities, the newlyweds and their loved ones took over the Italian Riviera.
After an intimate dinner at Ristorante Puny on Friday evening, a larger group enjoyed a pre-wedding lunch in San Fruttuoso followed by a dinner party also held at Dolce & Gabbana's villa.
Kardashian, 43, and Barker, 46, first tied the knot during a spontaneous "practice wedding" at a Las Vegas wedding chapel on April 4.
Then on May 15, they legally married at a Santa Barbara-area courthouse ahead of their Italian nuptials.
"They had to legally get married first ahead of their big Italian wedding, which is happening very soon," a source told PEOPLE afterwards. "All the details are set and the whole family, including all the kids, are very excited."
Kardashian shared photos from their California wedding day on Instagram — including her and Barker in a car with a "Just Married" sign — with the caption "Till death do us part."
After a decade of friendship and nearly a year together, the Blink-182 drummer proposed to Kardashian in October 2021 on the beach in Montecito, California.