So naturally, we're wondering who's next on Britney's collab list. Don't worry, we've got a few ideas.

First, let's talk fellow pop femme fatales. A Britney and Gaga collaboration would make the charts (and several of Twitter's servers) implode. And don't think we haven't noticed those friendly tweets back and forth between Brit and one of her original pop scene classmates, Christina Aguilera. Plus, who isn't hoping Beyoncé hops back on the scene a little sooner than planned?

Next, the male collab contenders. Maybe she'll follow Katy Perry's lead and snag studio time with Kanye West? Or continue along the line of working with younger artists (like her recent work with Selena Gomez) and make the Beliebers go crazy with a Justin Bieber duet?

We asked Brit's club bestie DJ Pauly D to chime in with his vote, and of course he wanted a piece of the action. "She should collab with 50 Cent and DJ Pauly D," he told us. "That would be amazing and I would spin it in the clubs for sure."

So what do you think? Should Britney keep things femme fatale and team up with another leading lady of pop, or should add a little testosterone to the equation?