Britney Spears has been making headlines for her unpredictable performances at the MTV Video Music Awards for years. From shaking her assets on stage with a python to locking lips with one of the music industry’s most iconic females, Brit-Brit has made the annual VMA's the most anticipated musical event of the year.

And while we’re all aware that Britney is making an appearance at this weekend’s event, nobody is quite sure what to expect from the chaotic pop tart.
In light of this weekend’s awards, we thought we’d countdown Miss Spears’ three most memorable moments at the VMA’s.

Coming in at No. 3...

Sexy Britney teams up with a Python

It was a mere seven years ago that Britney shocked audience members and fans with her phenomenal performance of “I’m a Slave for You.” Dressed in a barely-there green bikini-like top and knee high skin-colored boots, Brit-Brit got her groove on with a yellow python. Only Britney can transform one of the scariest creatures into one of the hottest fashion accessories.

Our No.2 Pick Goes to...

Britney’s Not-So-Comeback Performance

Everyone was geared up to see Britney’s much-anticipated comeback during last year’s 2007 video awards. And with Britney opening the show, fans of the former pop princess were expecting a traditional Spears performance with all the bells and whistles. Unfortunately, the timing seemed a little premature and the Brit-Brit we all once knew and loved wasn’t ready to make an appearance onstage. Instead, a poor performance of bad lip syncing and stiff dancing moves made Brit’s supposed comeback performance painful to watch.

And the No. 1 Most Memorable Moment is...

The Infamous Britney/Madonna Kiss

There isn’t a single soul anywhere around the globe that hasn’t heard of the infamous moment on stage when Britney Spears and Madonna locked lips. The 2003 MTV Video Awards went down in music history as two of the most-talked about female singers of all time swapped saliva in front of millions of stunned fans. To this day, the Britney/Madonna kiss remains the most popular moment in MTV history.

Can Brit-Brit top her previous performances this year?

According to the host of this year’s show, Richard Brand, Britney will be “doing something so mind-bending, it'll probably make you want to start families with each other in a random, possibly Mormon, way." Sounds interesting to say the least.

Do you think Britney will make her comeback at this year’s event?