Jennifer Lopez staying at Ritz-Carlton while rehearsing for upcoming tour

Jennifer Lopez has been quietly holed up for a few days at the Ritz-Carlton with boyfriend and choreographer Casper Smart.

The pair and many more back-up dancers have been rehearsing at Temple's Liacouras Center for the North American leg of her tour with Enrique Iglesias which kicks off Saturday in Montreal and plays Atlantic City's Boardwalk Hall on July 29.

We're told the dancers started working at the Liacouras Center on June 29 but that J. Lo only rehearsed there over the weekend.

The whole gang is now done at the venue but still in Philadelphia and expected to leave for Montreal Thursday or Friday.