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Jennifer celebrated a sunny Thanksgiving on the island of Kauai with her twins and family.
According to Radar Online, Lopez's 24-year-old backing dancer also joined them but Lopez's spokesman was unavailable for comment.
The dancer is rumoured to have met 'Jenny from the block' in May this year following her break-up with husband of seven years, Marc Anthony. Casper performed alongside Jennifer at the American Music Awards in LA last Sunday.