3:36 Katy Perry - Birthday (Lyric Video) 8:01 Katy Perry - Birthday (Official) 3:36 Katy Perry - Birthday 4:02 Katy Perry - Birthday (Live at BBC @ Glasgow 2014) 5:06 Katy Perry Birthday @ Billboards 2014 1080p HD 3:34 Katy Perry, Zayn - Birthday X Pillowtalk (TikTok Mashup) [Lyrics] 3:36 Katy Perry - Birthday (Lyrics) 4:05 Katy Perry-Birthday(S L O W E D) 3:37 Katy Perry - Birthday (Lyrics) 3:36 Katy Perry - Birthday (Official Audio) 3:58 Katy Perry - Birthday (Karaoke Version) 3:45 Katy Perry - Dark Horse ft. Juicy J 4:53 Katy Perry - Birthday (Cash Cash Remix) 3:30 Katy Perry - This Is How We Do (Official) 4:22 katy perry - birthday ( slowed + reverb ) 2:57 Altered Images - Happy Birthday (Video) 4:30 Katy Perry - Roar 4:08 50 Cent - In Da Club (Official Music Video) 3:50 Katy Perry - Teenage Dream (Official Music Video) 3:08 katy perry - birthday (sped up & reverb) 0:16 Katy Perry - Happy Birthday