The couple's friend, Conrad Jack Carr, also posted photos and videos on his Instagram story of the event on December 23, with Hemsworth and his brothers pictured near some balloons with "Mr." and "Mrs." printed on them, according to People.
She added the date "12.23.18" in one of her posts, in which she is wearing a long gown and Hemsworth a suit.
When the couple broke off a previous engagement in 2013 and reconciled in 2016, they spent much of their time together in Malibu which might be the reason why they wanted to get married there. The love story of the Cyrus-Hemsworth couple began nearly 10 years ago, when the two young people first met on the set of "The Last Song" and started dating.
Disney Star Miley Cyrus Confirms Marriage to 'Hunger Games' Star Liam Hemsworth
Singer Miley Cyrus and actor Liam Hemsworth have officially confirmed their marriage. They were seen together in 2015 and it was later announced that they were engaged once again. Cyrus captioned a picture of the pair sharing a kiss.
Miley also shared a video of her dancing to Bruno Mars' 'Don't Believe Me Just Watch'. Cyrus' mom, Tish Cyrus, and dad, Billy Ray Cyrus, were in attendance.
Hemsworth, 28, previously shared a striking photo of their burned-down house that showed the letters "L-O-V-E" left in the ashes.
Cyrus' sister Noah shared photos of herself crying while the couple's friend Conrad Jack Carr shared images of a cake being cut.
Representatives for both stars did not immediately reply to requests for comment.