Madonna opted for beauty rest Sunday after rehearsing for her MSG gigs this week, but her dancers didn’t. The Material Girl’s crew descended upon James Hotel club Jimmy, spies say, to celebrate the birthday of Nicole Winhoffer, Madonna’s personal trainer, with whom Madge made the “Addicted to Sweat” DVDs. Also celebrating were fotog Steven Klein and DJ Samantha Ronson, spies say. Meanwhile, Madonna’s guitarist Monte Pittman was spotted dining at Antica Pesa in Williamsburg.