Reliable Source: Katy Perry parties in Georgetown with pals

Hey, isn't that... pop star Katy Perry, chilling with pals at the Alex in Georgetown into the wee hours of Sunday morning?A spy tells us that the "Roar" singer/Hillary Clinton backer -- chic in loose hair and dangling statement earrings -- appeared to be part of a post-wedding party. The happy gang lounged on the patio, snapping pics and sipping cocktails.