Lady Gaga to go 'meatless' for Clinton Foundation bash

Lady Gaga to go 'meatless' for Clinton Foundation bash

...according to President Clinton on Letterman last night. Gaga joins Usher, Bono, Kenny Chesney and more on Saturday at the Hollywood Bowl in L.A. to celebrate 10 years of the William J. Clinton Foundation. Yahoo is live streaming the concert.

Also, stick around in the video to hear Rob Lowe do a decent Clinton impression.