So this is really happening. Britney and Iggy are collaborating, and here are some pics to prove it. They were both spotted filming their new music video. We have no idea what song is this for and we hope Iggy doesn't pull out some non-human language when she raps.

Here they are. Britney looks hot.

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Iggy, well, that's Iggy.

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Britney looks hot.

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Britney looks hot.

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They look like they're the same age.

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