Katy Perry

Katy Perry has notched another mag cover, this time the January 2014 cover of Marie Claire, which is its first-ever Change Your Life issue. Perry would know a little something about that, wouldn't she?

Katy Perry has been named a UNICEF Goodwill Ambassador. She also performed at the organization's ninth annual Snowflake Ball in NYC (Dec. 3), looking sparkly in silver and resplendent in red while at Cipriani Wall Street.

Katy Perry and John Mayer's duet 'Who You Love,' which appears on his album 'Paradise Valley,' will be the singer-songwriter's next single. Since it's a single, it has to have its own accompanying cover art and it features the couple posing in romantic fashion.

The 2013 American Music Awards were pretty innocuous and safe, in terms of pop star antics. There was no tongue-and-twerk craziness and things were tame for prime time, network TV. However, the broadcast was not without controversy, as Katy Perry was accused of racism after her performance of 'Unconditionally,' which featured the singer dressed as a geisha.

Katy Perry loves to have fun with fashion, and with her dress at the 2013 American Music Awards, it was no exception! The stunning singer worked the carpet in a polka dot and floral dress by Oscar de la Renta. Our favorite part? The book-inspired clutch she carried!

The elements factor into Katy Perry's 'Unconditionally' video. It looks like a period clip, mixed with some modern flourishes, like, you know, cars.

Katy Perry shared a 22-minute, behind-the-scenes feature from her 'ROAR' video. The making-of featurette is about three times as long as the actual official video, but you get a real sense of Perry's creative process and the joy she felt hanging out with the her co-stars aka wild animals.

Katy Perry's video for 'Unconditionally' is going to be epic! It explores topics like living life and loving without condition. We know that from the 42-second preview the singer shared.

Get ready for another epic Katy Perry awards show performance, Katycats!

The 2013 EMAs, held in Amsterdam today (Nov. 10), saw celebs in a variety of different outfits. There were more cute, edgy dresses than there were fancy, couture gowns, since it's a fun, less formal event. The stars dressed accordingly and they all looked faboosh in their own, unique way.