John Legend and Chrissy Teigen have renewed their vows in celebration of their 10th wedding anniversary!

The couple, who tied the knot on September 14, 2013, in Lake Como, Italy, returned to their wedding destination this weekend, a source tells PEOPLE.

The celebrations kicked off with a brunch at Villa Pizzo — the site of the couple's first wedding ceremony a decade ago — on Saturday. "It was very romantic," the source says. "They arrived by boat. ... It was breathtaking to see them still so happy together."

Later in the day, the vow renewal ceremony took place.

"[John and Chrissy] came out onto a balcony and greeted all the guests," the insider says. "[John] also held a brief speech later, after the dinner."

"There was dancing and there was a lakeside bar that was a big favorite," the source continues. "The food was appreciated."

The source also notes there were "flowers everywhere," adding: "It's been a very elegant, very classic event.