ContactMusic — Katy Perry thrilled fans at a concert in Los Angeles on Friday (05Aug11) by inviting internet sensation Rebecca Black onstage. The pop star took her California Dreams tour to the Nokia Theater, playing through her hits and covering tracks by Whitney ... more info

Yahoo! Music UK — world entertainment news - Ashton Kutcher got Sunday's Teen Choice Awards off to a rousing start when he showed off his singing skills and belted out an a capella version of Katy Perry's Teenage Dream. more info

ContactMusic — Ashton Kutcher got Sunday's (07Aug11) Teen Choice Awards off to a rousing start when he showed off his singing skills and belted out an a capella version of Katy Perry's Teenage Dream. The actor was the first winner at the Los Angeles prizegiving, cl... more info

L.A. Times - Entertainment — Ashton Kutcher sings Katy Perry, Sean Kingston gets sincere and Selena Gomez keeps her hands to herself. Ashton Kutcher sings Katy Perry, Sean Kingston gets sincere and Selena Gomez keeps her hands to herself. more info

L.A. Times - Entertainment — But the set hit a wall late, where against all Perry s strengths, the show spun out into an acoustic karaoke ramble of top-40 singles. more info

L.A. Times - Pop & Hiss — Katy Perry performed at the Nokia Theatre L.A. Live on Friday, August 5, with Robyn opening. Live review by August Brown. more info

Perez Hilton — Good stuff!! Get comfy, Katy Perry! You're staying on top with this one!!! It was supposed to premiere next week, but the remix of Last Friday Night (T.G.I.F.) Remix featuring Missy Elliot just leaked and we couldn't resist! We had to share!!! Check ... more info

Topix — P!nk, Rihanna, Taylor Swift, Katy Perry, Lady Gaga, and Rise Against are the nominees. more info

Guardian Music — Tricky's unlikely collaboration with Beyoncé was just the start, as Morcheeba and co set the production tone for 2011When Beyoncé headlined Glastonbury earlier this summer, the biggest surprise wasn't that she managed to pull it off – in spite of... more info

Altsounds — Natalia Kills will be making a welcomed return to the U.S. this summer for select tour dates, including opening for Katy Perry later this month. Since unleashing her brand new single '*FREE*' last month, British born Kills has received further criti... more info