Taylor Swift Steps Out Smiling After Calvin Harris' Twitter Slam

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Taylor Swift appears to be shaking off the drama between herself and ex-boyfriend, Calvin Harris.

The 26-year-old singer was spotted out and about in Australia on Thursday, dressed in skimpy overalls and a white top. While exiting the local clothing store Kookai, Swift flashed a smile and seemed to be in good spirits.

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The GRAMMY winner's new boyfriend, Tom Hiddleston, was also seen out earlier in the day. The 35-year-old actor went for a run by himself on the beach, wearing a Nike shirt with the word "legendary" printed across it. Hiddleston is in Australia to begin shooting Thor: Ragnarok.

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Meanwhile, the hashtag #TaylorSwiftIsOverParty has been trending ever since Harris responded to his ex's rep confirming that she wrote his and Rihanna's summer hit, "This Is What You Came For." The 32-year-old DJ took to Twitter on Wednesday afternoon to praise Swift for her lyrics, but also slammed the singer and her team for how they went about revealing her part in the song.

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"Hurtful to me at this point that her and her team would go so far out of their way to try and make ME look bad at this stage though," Harris tweeted. "I figure if you're happy in your new relationship you should focus on that instead of trying to tear your ex bf down for something to do."

Swift initially heavily promoted "This Is What You Came For" when it was released in April, but after her split from Harris, she reportedly felt disrespected. A source told ET that "during their relationship, Taylor wrote the song, sat down at a piano and did a demo into her iPhone."

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When she sent it to Harris, he apparently loved it. "They both went into a studio and did a full demo with Taylor on vocals and Calvin doing the beat," the source added. "They both knew the song would be a hit, but Taylor wrote it for Calvin and [they] both agreed it was a bad idea to let the world know they collaborated as a couple -- it would overshadow the song."

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