(ABC News) – Britney Spears kicked off her two-year residency at Planet Hollywood Resort and Casino in Las Vegas, drawing raves from those who were lucky enough to score tickets. According to Spears, 32, the praise is well-earned, as she worked hard with choreographers to learn difficult dance moves. “They’re new, up-and-coming fresh guys, so their stuff is really hard,” she explained. “It’s more rewarding after you perform something that’s really hard to do than just something that you just kinda throw together.”
Here’s a few notable moments you might have missed if you weren’t in the crowd.
2. A Wardrobe Malfunction
During the Dec. 30 performance, Spears was performing her song “Circus” when the back of her dress flew open
. But the singer kept right on dancing and singing through the mishap.
4. She’s Been Accused of Faking More Than Just Singing
Not only has Spears been accused of lip-syncing throughout the show but recently critics accused her
of painting on her abs. Others have defended her. “It’s actually pretty insane how much different she looks in person,” one fan wrote on Instagram. “She’s flawless.”
5. She Performs All the Hits Want to see her perform her biggest hits from the past decade or so? You’re in luck. According to various reports, the 90-minute show is packed with her newer songs (“Work Bitch” is the opening number), but expect to hear “… Baby One More Time,” “I’m a Slave 4 U,” “Oops! … I Did It Again!” and “Lucky” too.