Perez Hilton — You can watch Katy Perry's ENTIRE Rock in Rio show right here!!! She kicks it off with Teenage Dream and follows with all of her other amazing songs! more info

MTV.co.uk News — Selena Gomez has been confirmed as the host of the 2011 MTV EMAs.Justin Bieber's girlfriend is set to follow in the footsteps of past presenters Eva Longoria, Katy Perry and Snoop Dogg to front the... more info

Perez Hilton — The two kicked-off the world's largest music festival with a big, sparkly bang!! Katy Perry and her BFF Rihanna rocked the hell outa 100,000 fans last night as they opened the legendary Rock in Rio music festival in Rio de. Before her performance Sat... more info

ContactMusic — Pop star pals Katy Perry and Rihanna teamed up to open the legendary Rock in Rio music festival in Brazil on Friday 23Sep11 Perry was the first headliner to take the stage at the City of Rock venue in Rio de Janeiro thrilling the crowd of 100000 fans... more info

Perez Hilton — Holy shi…!!! It's Carmen Miranda! She looks GREAT for 102 - especially since we were pretty sure she died in 1955! HA! No, its not Carmen, bless her soul. It's actually our lovely friend Katy Perry, who arrived in Carmen's native Brazil this week t... more info

Pop Justice — » Contrary to popular opinion, Kelly Clarkson is not, we repeat NOT, trying to compete with John Lennon or Bob Dylan. (Music-News) (http://www.music-news.com/shownews.asp?H=Kelly-Clarkson:-I-cant-compete-with-Lennon&nItemID=44241) » Ke$ha has des... more info

Stopcryingyourheartout.com — Exclusive photos of David Bowie/Kate Moss, Jay-Z, Lily Allen, Lady Gaga, Adele, Chris Martin, Rihanna, Take That, Noel Gallagher, Liam Gallagher, Tinie Tempah, Katy Perry and many more 7th ' 9th October at Red Bull Studios 155-171 Tooley Street Londo... more info

Gigwise — Singer goes incognito in Brazil... more info

Big Apple Music Scene — Last season, How I Met Your Mother's guest stars were pretty hit-or-miss: John Lithgow was aces as Barney's dad, but Katy Perry's part could've been done by anyone. But we're so psyched about the latest person to join the cast: Katie Holmes, playing ... more info

Gigwise — After singer had to pull out more info