OK! magazine claims the couple became engaged after spending New Year's Eve together in Miami, where reality TV star Kardashian hosted Mansion's Tanqueray and Ciroc party on Monday.
If the reports are true, it will be the 27-year-old beauty's second marriage--she divorced music producer Damon Thomas in 2004 after a four-year union.
A spokesman for Kardashian was unavailable for comment.
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