Marc filed for divorce from 28-year-old Shannon on December 16, with court documents citing that the marriage was 'irretrievably broken'.
Lots of people go through periods of doing moronic things like driving too fast sans seatbelt, experimenting with dangerous drugs, and generally going through life like they've never heard of a terrifying little thing called death.
Marc Anthony's outdone himself again and wasted NO time doing so -- he scored a model barely old enough to order Jägerbombs, even before his divorce was final.
The site reports that Mariana has since traveled with him to one of his shows, and they've holidayed together in the Caribbean.
Mail Online have contacted Marc's representatives for comment.
Anthony and Downing have been linked for the past few months, according to TMZ. He met the Wilhelmina Miami model at a dinner party and was "immediately smitten," the gossip site reported.