Well, you knew Twitter would need more money some time. And Kara Swisher of All Things D reports that the some time is now. The company will take $200 million in fresh funding in a round led by legendary VC firm Kleiner Perkins.

Twitter has completed its latest round of funding-$200 million at a $3.7 billion valuation-with Kleiner Perkins as the lead investor, according to sources familiar with the situation. Sources said the San Francisco microblogging service is also adding two new board members: Flipboard's Mike McCue and former DoubleClick head David Rosenblatt.

Read the full story at All Things D.