The couple, who announced their engagement in March, apparently wed on the Pacific islands in front of family and friends.
A source close to the pair confirmed their nuptials to Us Weekly magazine, but gave no further details.
Just married? Elle Macpherson and hotel heir Jeffrey Soffer are said to have wed in Fiji
Elle, 49, and hotel heir Jeffrey, 44, got engaged in March after reconciling in November 2012 following a eight months apart.
They originally started dating in 2009, but split in March 2012.
Happy together: Elle and Jeffrey in St Moritz, Switzerland in March 2013 - the same month they became engaged
Bling: Elle showed off her engagement ring at the Barry Karacostas the Dog Trainer fundraising event in London in late March 2013
However, Elle rushed to Jeffrey's bedside when he was injured in a helicopter crash in the Bahamas late last year, which killed his friend Lance Valdez and saw him undergo surgery for a fractured vertebrae.
Shortly after getting engaged, Elle was spotted flashing her large diamond engagement ring out in London.
Long-distance love affair: With Jeffrey in Miami and Elle, pictured in Florida in 2010, based in London, they initially found it difficult
The wedding will be the second for the beauty, dubbed The Body, who was previously wed to French fashion photographer Gilles Bensimon - who was 20 years her senior - from 1986 until 1989.
Elle had a high-profile romance with French financier Arpad from 1995 until 2005, becoming engaged in 2003 and having two sons.
Long-term love: Elle and ex-fiance Arpad Busson, father of her two children
Elle's nuptials come just a few weeks after the model served as bridesmaid at her sister Elizabeth's wedding on the Thai island of Koh Samui.
MailOnline has contacted Elle's spokesperson for comment.
Friendly exes: Elle and first husband Gilles Bensimon have remained friends since their divorce 24 years ago