I plan a Brit Awards after-party attended by celebrities like Katy Perry and Lorde. Here's what goes into organizing an event for the stars.

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Ellie Goulding, Katy Perry and Lorde at the 2014 Universal BRITs after-party
Ellie Goulding, Katy Perry, and Lorde at Universal Music's 2014 Brit Awards after-party.

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