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" Katy Perry is stopping by Facebook&amp;#039;s headquarters in Palo Alto, California today at 5:30 p.m. ET/2:30 p.m. PT to make a very special and live announcement. What could it be? Make sure to be back here later this afternoon to watch it all unfold on our live stream below!  facebookguests on livestream.com. Broadcast Live Free  What do you think the announcement is? Take a guess in the comments section below! "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.seventeen.com/celebrity/a13287/katy-perry-facebook-announcement-live-stream/>