Billboard Bits serves up the best bite-sized nuggets of music news and gossip.

System of a Down Announce 2011 Reunion

After being defunct for over three years, hard rockers System of a Down has announced that they will return with new tour dates in 2011. In a new message on the band's website, the group writes, "We have no master plan of sorts - we are playing these shows simply because we want to play together again as a band and for you, our amazing fans. We look forward to seeing all of you!" (Systemofadown.com)

Kelly Osbourne Defends Miley Cyrus, Then Dresses Up Like Her

A day after defending Miley Cyrus on Twitter, Kelly Osbourne has released a photo of her and the pop star on Twitter, with Osbourne matching Cyrus' hair style and peace sign pose. Osbourne came to the defense of her new BFF, who costars with her in the upcoming film "So Undercover," after a video of Cyrus hitting a bong leaked. "This really makes me mad. Miley is one of the most hard working respectful women I have ever worked with I am learning a lot from her!" Osbourne wrote. ( Us)

Oprah Winfrey Inspired by Michael Jackson

In a new interview, Oprah Winfrey reveals that Michael Jackson's negative self-perception led to the decision for the talk show host to launch the Oprah Winfrey Network, her own cable TV channel. Winfrey says that she wanted to take a risk on the Network and not "chase the phenomenon" of her talk show in the same way that Jackson tried to follow up "Thriller" with an even bigger album. "I thought, I don't want to be Michael Jackson," says Winfrey.

Flaming Lips Releasing New Material Every Month Starting in January

Are the Flaming Lips borrowing a page from Kanye West? The psych-rock veterans plan to return to the studio soon with producer Dave Fridmann and release new songs every month, with the first batch of new music due in January. "Not that I think the old way was boring, but to spend another two years with the same 13 songs, it's just like fuck," says frontman Wayne Coyne. "I think we're going to just start to do things and put it out. Once we get 11 or 12 songs together, maybe we'll do something else with it." ( Rolling Stone)

Last Night's Gorillaz Show Their Last Ever?

With Gorillaz' "Escape to Plastic Beach" tour wrapping up last night in Auckland, UK's Vector Arena, frontman Damon Albarn has hinted that the performance may be the last ever for the group in its current form. "For us, this is the last time... we all hope and pray on this stage, and [for] all the people that work with us, that we will get a chance to work together as a collective again. But we may never do that again," he told the crowd. Gorillaz will release new album "The Fall" to fanclub members on Saturday. (NME)

Lady Gaga, Alicia Keys Most Charitable Stars of 2010

Lady Gaga tops this year's list of "Top 20 Celebs Gone Good," which ranks the stars who have donated the most money to charity in a calendar year. Alicia Keys took the No. 2 spot, while Taylor Swift, Nick Jonas and Justin Bieber were the other musical celebrities to crack the top 10. (People)

(Reporting by Jason Lipshutz)