The model has become the subject of intense media scrutiny recently following the revelation that her husband, the Snow White and the Huntsman director Rupert Sanders, had a 'fling' with Twilight star Kristen Stewart.
Recent reports have suggested that Ross's brother Leopold had revealed that the relationship between Sanders and Stewart went on for months.
However, People has now claimed that none of Ross's relatives have spoken to the media.
"Contrary to inaccurate reports, neither Liberty Ross nor any member of her family has spoken to the media," a source said. "Quotes that are being attributed to the Ross family have been completely fabricated."
In her public apology after the fling emerged, Stewart described her relationship with Sanders as a "momentary indiscretion".
Robert Pattinson - who has reportedly been seen in London this week - allegedly asked Stewart to move out of their shared Los Angeles home after her infidelity was made public.
Film producer Giovanni Agnelli recently suggested that Stewart and Sanders "did not have any type of sex", while Sanders's father has claimed that the media attention surrounding the tryst is "all a lot of fuss about nothing".