Anna was spotted October 20 leaving Shoreditch House in London after clubbing with Katy Perry and Katy’s boyfriend John Mayer.

Candids > Candids in 2013 > October 20: Leaving Shoreditch House in London after clubbing with Katy Perry and John Mayer

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They’ve both achieved worldwide success by the tender age of 28.

So no doubt Katy Perry and Anna Kendrick had plenty to talk about as they partied at London’s Shoreditch House on Sunday night.

Katy was celebrating her successful performance on The X Factor results show earlier on Sunday and was joined by her pal Anna and boyfriend John Mayer as they partied into the early hours of Monday morning.

Katy was dressed up for a night of clubbing in a black corset, sparkly skirt and thigh high boots.

She wore a chunky necklace and vamped up her look with a slash of red lipstick.

50/50 actress Anna was positively demure in comparison to Perry.

She dressed down in jeans, flat boots, a white shirt, blue sweater and a black leather jacket.

They also wore very different expressions with Katy beaming as she walked out of the club while Anna sported quite a glum expression.

Katy and Anna hung out together in London last month after Katy’s Tunes Music Festival performance where Anna instagrammed a picture of them with Ellie Goulding.

It’s not surprising that Katy was in such a good mood. Not only did she put on a successful show on The X Factor earlier but she was joined at Shoreditch House by her handsome boyfriend John Mayer. . . .{dailymail.co.uk}