Ke$ha Rocks Madison Square Garden with 'TiK ToK'

Ke$ha poses for photographs and rocks the house as she opens Z100′s Jingle Ball 2009 held at New York City’s Madison Square Garden.

The 22-year-old singer, who released four new songs today online, caught up with JustJared.com earlier today at the Jingle Ball pre-show!

After her performance, K and her mom shared an emotional moment after Ke$ha nailed her first big performance!

10+ pictures inside of Ke$ha at the Jingle Ball…