Riviera report

FORMER Knicks star Amar’e Stoudemire shopped up a storm with three women at the Louis Vuitton store in Monaco. Later, his ladies gambled in the Monte Carlo Casino while hewas on his phone. Calling his agent? He still doesn’t have a team . . . TAXI king Gene Freidman held his annual Fourth of July bash in the South of France, ending with an allnight poker game where he bested “attorney to the oligarchs” Ed Mermelstein and 5WPR chief Ronn Torossian. Freidman didn’t fare as well in a scooter race, coming in last . . . THE Post’s Dana Schuster reports Cher ( above) — unrecognized by the locals — got off a tender from a private yacht in St. Tropez with Kyle Richards, the aunt of Paris Hilton, and they strolled together into Club 55.