Miley CyrusHot on the heels of her arch-rivals the Jonas Brothers, who helmed the 2009 MuchMusic Video Awards, Miley Cyrus has been announced as co-host for this year's MMVAs in June. Let the tween screaming commence!

Not surprisingly, the 17-year-old pop superstar, who has sold 15 million albums, will also be performing at the annual award show/street party in downtown Toronto.

"I'm so excited to co-host the MuchMusic Video Awards. I can't wait to get back to Canada and perform for all of my fans. It's going to be an awesome night," promised Cyrus via press release (which presumably left out her final, emphatic "y'all!").

Maybe if we send Miley a rhyming dictionary, she'll even Canadianize her number one smash, 'Party in the USA'?

Now that the host gig is squared away, nominees will be announced in May.

The MMVAs will air live on Sunday, June 20 at 9PM on MuchMusic.