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Sweat until his clothes come off

Christina Aguilera has gone through many different versions of herself, but this is the first time we’ve seen Ed Sheeran go through a version of Christina Aguilera. Britain’s second-most-famous ginger covered Xtina’s “Dirrty” for BBC Radio 1’s Live Lounge, complete with Redman rap breakdown. We are officially convinced that he would be a hoot at parties.

In other celebrity impression news…

Ed Sheeran certainly was not trying to do a Christina Aguilera voice during his “Dirrty” cover, but Aguilera was spot-on in her impression of Britney Spears on “The Tonight Show Starring Jimmy Fallon” on Monday night. Especially impressive? She broke down the lyrics to “This Little Piggie” to the tune of “…Baby One More Time.” Her kids sure have a cool mom.

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THE QUOTE

“For my hair, I don’t wash it every day. We start out with a blowout on day one, then we go into a messier vibe the next day, and then we flat iron it and do a really sleek look on day three since that requires a little oil in the hair. Day four could be a slicked-back ponytail, and on the fifth day is when you wash it. That’s a little excessive, maybe. [Laughs.]”

—Kim Kardashian, to Into The Gloss, on her beauty routine. Yes, read all that again and see if you can make sense of it.

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Girl with no more tattoos

Fans of David Fincher’s “Girl with the Dragon Tattoo” adaptation have been waiting years to see if a sequel will surface. But according to star Rooney Mara, it’s not looking good. “I’m sad never to do it again, but it just doesn’t seem like it’s in the cards,” she told E! News. Fincher told another site back in September that a script for “The Girl Who Played With Fire” was in the works, so maybe Rooney is just out of the loop?

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THE QUOTE

“One day we were in the makeup trailer and I found out that, one, he watched ‘The Bachelor,’ and that we kind of loved the same TV shows—except that he did not like ‘Scandal.’ And I was like, “I want to love you, Adam Scott, but you can’t hate on me over ‘Scandal.’”

—“Parks and Recreation” star Retta, to Vulture, on her interactions with co-star Adam Scott. Dude, “Scandal” is so much better than “The Bachelor.”

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THE DIGIT

$50,000

Taylor Swift donated $50,000 to New York City public schools, according to Capital New York. In October, the “Welcome to New York” singer pledged to donate all proceeds from the single to the cause.