L.A. Times - Entertainment — “Candid Camera” meets “Jackass” in Katy Perry’s loopy new video for “Birthday” from  her latest album, “Prism.” more info

L.A. Times - News — more info

MTV.com News — Katy goes undercover to crash real-life birthday parties in her latest clip. By Christina Garibaldi more info

Time — No birthday suits here — the singer is almost unrecognizable as she crashes five different birthday parties in ridiculous disguises more info

MTV.co.uk News — The singer crashed FIVE birthday parties in the 8-minute vid... more info

MTV.co.uk News — See K-Pez as you've never seen her before right here... more info

TMZ — ON TODAY'S SHOW Katy Perry RUINS a Kid's Birthday Party 'Sizzurp' Stoppage Causes Wide-Spread Panic in the Rap World Justin Bieber's Latest Snafu Offends BILLIONS How Did a Dude Drop $135,000 in a STRIP CLUB!? SKYPE US TMZTVSHOW TWEET US Tweet to… ... more info

ContactMusic — Lily Allen pokes fun at fellow pop stars Katy Perry, Rihanna, Beyonce, Lady Gaga and Lorde in her new single Sheezus.The Smile hitmaker mocks the... more info

MTV.com News — KP's Twitter is so feisty it hurts. But it feels so good. By Emilee Lindner more info

The Daily Mail — Katy Perry caused chaos when she pranked a five-year-old's birthday party for her latest music video, staging a fake car crash while dressed as a clown. more info