NEW YORKBritney Spears pulled out all the stops for her first of three shows at Madison Square Garden on Monday. Donning several different sexy outfits and addressing the crowd several times, Spears proved that she can still charm an arena full of fans.

After opening acts Kristinia DeBarge and Jordin Sparks finished their sets, the Circus began. First came acrobats on trampolines, then the opening video of Perez Hilton dressed as a queen presenting the show's ringmaster, Spears.

Spears descended from the ceiling dressed in a shiny metal bodysuit, starting the show off with her single "Circus." She then hopped in a cage with male dancers dressed in S&M gear for "Piece of Me."

Britney broke out a slew of fan favorites, like "Radar" (complete with pole dancing), "Boys," (during which she requested the male dancers do push-ups for her) and "If U Seek Amy," which segued into Spears reemerging onstage in her genie attire for "Me Against the Music."

But the crowd got most excited when Spears addressed them directly, asking how everyone was doing before saying, "I'm going to do a ballad. It's called 'Everytime.' " She then wiped something away from her cheek — it seemed she got a bit emotional while floating above the stage in the arm of a giant umbrella.

Spears spoke to the fans again, asking, "What's up, New York?" before launching into a remixed version of "I'm a Slave 4 U" sporting a sparkly black bodysuit.

"Toxic" also wowed the crowd as Britney performed the hit in skintight red pants, a black sports bra and knee-high boots. Her last song before the encore was a remixed version of her classic " ... Baby One More Time."

As she took the stage for the final time, a video featuring the most memorable images from her music videos played as the music for "Womanizer" kicked in. Dressed as a policewoman, she closed the show with a blaze of fireworks, addressing the crowd one more time before taking her bow, saying, "Have a wonderful night."