Katy Perry - Birthday (Lyric Video)

Get "Birthday" from Katy Perry's 'PRISM': http://katy.to/PRISM Katy Perry Complete Collection on Spotify: http://katy.to/SpotifyCompleteYD Katy Perry Essentials on Apple Music: http://katy.to/AMEssentialsYD Watch your favorite Katy videos on YouTube: http://katy.to/MusicVideosYD Follow Katy Perry: Website: http://katy.to/WebsiteYD Instagram: http://katy.to/InstagramYD Twitter: http://katy.to/TwitterYD Facebook: http://katy.to/FacebookYD Lyric video for Katy Perry’s “Birthday” from ‘PRISM’ produced by Mandy Sellick and directed by Aya Tanimura. Music video by Katy Perry performing Birthday. (C) 2014 Capitol Records, LLC