Katy Perry becomes a Belieber after Justin Bieber concert - picture

Katy Perry has confessed that she is a Belieber.

The singer attended Justin Bieber's concert at the Staples Center in Los Angeles last night (October 3) and admitted that she has joined the star's loyal fanbase know as Beliebers.

"Last night I saw The Black Keys, tonight I saw Bieber. I think my musical week is complete," Perry tweeted, before adding: "WE ARE BELIEBERS!"

The star then posted a picture of herself and a group of friends dressed in purple hoodies that have become synonymous with the Canadian sensation's image.

Bieber is currently on his world tour in support of his latest studio album Believe, which topped the UK and US charts back in June.

The 18-year-old recently apologised to fans after vomiting on stage during one of his shows.

Watch the music video for Katy Perry's recent single 'Wide Awake' below:

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