I got a question for you: "Somebody That I Used To Know" has been performed several times on major US TV shows such as The Voice, American Idol, and Saturday Night Live. It was covered by Canadian indie rock group Walk off the Earth using a single guitar played simultaneously by all five band members and by actors Darren Criss and Matt Bomer in the Glee episode "Big Brother". The hit song's accompanying music video was directed by Australian artist Natasha Pincus. The video, which has received over 1.1 billion views on YouTube as of August 2018, premiered on 5 July 2011. It shows Gotye and Kimbra naked against a white backdrop. While they sing, a pattern of paint gradually covers their skin and the backdrop via stop motion animation.

Based on this passage, who the girl in somebody that i used to know?
Let's think first:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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To answer this question, we should know that: The video, which has received over 1.1 billion views on YouTube as of August 2018, premiered on 5 July 2011. It shows Gotye and Kimbra naked against a white backdrop.
Therefore, the answer is Kimbra.