As fast as you can say Perry Farrell, the headliners for Lollapalooza 2010 have leaked onto the web. Following up last night’s revelation of Green Day, Soundgarden, and Lady Gaga, The Chicago Tribune‘s Greg Kot reports that the festival is also in negotiations with Arcade Fire and The Strokes (Two shows? Riight.) for this year’s headliners.

Kot adds that indie acts Yeasayer, The xx, and Dirty Projectors will also be on the bill, as will the dance acts Cut Copy and Hot Chip. For other expected and rumored acts, visit our Outlook page.

An official announcement isn’t expected until April. Hopefully, Perry can fix the leak by then.

Hat tip to Taylor…