Behind the scenes:

The superstar is celebrating her 33rd birthday today, December 13, in style, and her fans are ecstatic.

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Instead of a lavish party or tropical getaway, the Midnights singer has spent the day hard at work, teasing more new music on Instagram.

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"Thanks for all the beautiful wishes today!!" she began the caption on the post shared earlier this evening. "I spent my 33rd birthday in the studio of course 😏,wouldn’t have it any other way" - Taylor Swift

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Swift was photographed sitting on the studio floor, her leg stretched out beneath a cello laid across the floor. She marked the occasion by raising three fingers on each hand.

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Jack Antonoff, a frequent collaborator and Bleachers member, sat in a chair next to her, strumming on a guitar and making direct eye contact with the camera.

The singer has been riding high on the phenomenal success of Anti Hero, the lead single from her latest album Midnights, which has spent weeks at the top of Billboard's top 100 charts.

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The lead single from her most recent album Midnights, Anti Hero, has been flying high on the Billboard top 100 charts for weeks, giving the artist tremendous momentum.

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Birthday Wishes are coming from around the world including some high profile ones.

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