Taylor Swift celebrated her 36th birthday on Saturday, Dec. 13, and the singer's Eras Tour backup dancers Kameron Saunders and Jan Ravnik shared sweet social media tributes for the pop star on her special day.

"I'm endlessly grateful for you and for the 3 years we've shared together," another wrote.

Taylor Swift broke down in tears as she reflected on the darker moments of her record setting Eras Tour, including a thwarted terror attack and the mass stabbing that left three of her young fans dead

The six-part look behind the scenes of the musician's record-breaking 51-city, 21-month concert tour will be released two chapters at a time over three weeks.

Backstage footage shows the singer in tears after meeting survivors of the attack during her world tour.

The pop star released 'The End of an Era,' a six-episode documentary series about her massive tour, and a second concert film Friday, but fans say the influx of content is never too much.

See the episode release schedule, plus how to watch both the docuseries premiere and 'Final Show' concert film online for free.

The RIAA shared their annual report, and Taylor Swift's 'The Life of a Showgirl' was the top album of the year by quite a wide margin.