Matthew and Camila held a three day extravaganza for their wedding.
Initially, Alves and McConaughey - who met at a Los Angeles bar in 2006, and have two children together, son Levi, 3, and daughter Vida, 2 - saw no need to rush down the aisle because they already felt married, as Alves explained earlier this year.
"We've been living a married life for over six years now," the Brazilian-born beauty, 30, told ET Canada in March. "We have homes together, we have family together, we have kids, we've built a life together. So we've been living a married life this whole time."
One of the weekend's most meaningful moments occurred during the couple's sweet vow exchange. Instead of reading pre-written vows aloud to one another, McConaughey and Alves whispered them into each other's ears.
"No one knows what they said, but you could tell it was emotional because she was teary-eyed," a pal tells Us. "Matthew loves her, there's no doubt about that."
After sharing a long, passionate kiss with his new bride, McConaughey thanked everyone for coming -- officially kicking off the post-wedding celebration. Guests moved into a massive party tent for the reception, where they noshed on rotisserie-style Brazilian meats and danced to a live band playing American pop and Brazilian rock hits.
By Sunday afternoon, "some haven't even gone to bed yet!" one insider tells Us.
The rest of the day Sunday, guests were treated to food prepared by celeb chef Guy Fieri.