Radar Online's executive vice president David Perel, who Mezhgan reportedly told the news to, claims to have seen her engagement ring and reported she was "all smiles" while sharing the engagement news.
As for when Simon and Mezhgan will walk down the aisle, she remained mum on a wedding date, but Radar hinted that it could be soon.
The couple began dating after the prickly reality judge ended his relationship with fellow Brit Terri Seymour in 2008
When contacted by Access Hollywood, a rep for Simon was not immediately available for comment.
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