Note to self: don’t ask Katy Perry to take a selfie! The now slime-green -haired pop princess attended Coachella this weekend but unlike the thousands of other attendees who snapped shots of their lonesome at the music festival, KatyKat don’t play like that! It all went down at the Harper’s Bazaar ‘s private Shop Bazaar pool party at The Parker Palm Springs. A fellow partygoer gave Katy her cell phone and asked if she’d oblige her with a solo selfie. But Katy said no!