Matthew McConaughey and Camila Alves tied the knot on Saturday.

The long-term couple wed on Saturday evening in a private ceremony in Texas, with Camila taking Matthew's last name. She is now officially Camila McConaughey.

According to People, the pair walked down the aisle in front of close friends and family, including their two children, four-year-old son Levi and daughter Vida who is two-and-a-half.

Matthew and Camila both kept details of the intimate affair secret to some guests "until the last minute".

The ceremony was reportedly a quiet "island beach meets Texas" theme, with a yellow and orange colour scheme. According to ET Online, preparations began two weeks ago in Matthew's impressive Texas estate.

The sprawling grounds had been turned into a "makeshift campground scattered with tents for guests to sleep in", says Radar Online.

A niche Brazilian steak house catered for the few dozen guests. Staff waiters wore smart black pants and blue shirts on the big day, with Sheriff's deputies also on hand to provide security.

According to ET Online, the officials were positioned around Matthew's property to supply protection and make sure guests arrived without a hitch.

The Hollywood hunk proposed to his Brazilian model partner over Christmas. They have been together since 2007.

- Cover Media