Since the beginning of 2015, pop goddess Taylor Swift and her ever-expanding group of famous friends have been on a mission to slowly but surely take over the entire world.
And it's no secret by now that she's a fan of bringing those friends out onstage to perform with her.
But when she brought out Rolling Stones frontman Mick Jagger at her concert in Nashville on Saturday night...
In the video's description on YouTube, the woman's daughter says her mum had always wanted to see the Rolling Stones:
The [Taylor Swift] tickets were purchased a year in advance, not even knowing about special guests. My mom has had a lifelong dream of going to a Stones concert, but due to a serious health issue this past year she missed their tour. It was upsetting to her and a big disappointment ... When Mick came out it was like he walked on stage just for her.