Taylor Swift celebrated her birthday as any busy bee does: working away!

She's feelin' 33.

How did the pop star celebrate turning double digits on Tuesday?

"I spent my 33rd birthday in the studio, of course," she told her 236 million followers on Instagram.

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"Wouldn’t have it any other way. Love you!"

The Midnights artist also thanked fans for "all the beautiful wishes."

She shared a photo of herself in the recording studio with her frequent collaborator and producer Jack Antonoff. In the shot, she holds out both hands with three fingers.

Taylor also has an upright bass resting on her legs, while Antonoff holds a guitar.

The post has further sent Swifties into a tizzy with more new theories about what album Taylor may be re-recording and releasing next, with many believing Speak Now (Taylor's Version) is in the pipeline. Yet a recent appearance added more fuel to the fire that Reputation (Taylor's Version) may actually be up first.

Her newest album Midnights, released in October, broke major music industry records and has continued to dominate the charts weeks later. She also may have broken Ticketmaster with her concert ticket sales as well.

Whatever new or re-furbished tunes Taylor may have in store, she's certainly working through her birthday to get them ready to go.