Swiftie or not, you probably know Taylor Swift's lucky number is 13.

WarnerBros.
She was born on Dec. 13, 1989.

@taylorswift / Via instagram.com
She writes it on her hand on tour.

@taylorswift / Via instagram.com
Both of her Grammy-winning* albums, Fearless and1989, have 13 songs.

Big Machine Records
Album of the Year, that is. 👑
But you probably haven't noticed that whenever she posts about a song on Instagram, it's paused at a certain time: 13 seconds!

CBS
YEP. On Thursday she shared Lorde's new song, saying, "g2g brb just gonna make up an interpretive dance to this magnificent bop for the ages."

@taylorswift / Via instagram.com
BUT LOOK. IT'S PAUSED AT 13 SECONDS.

@taylorswift / Via instagram.com
HER LUCKY NUMBER.

CBS
And she did it again when she posted about her bff Ed Sheeran's song "Shape of You."

@taylorswift / Via instagram.com
And she snuck it in here in October 2016 when she fangirled over Kings of Leon's song "Over."

@taylorswift
There are more receipts.

@taylorswift / Via instagram.com
She even did it in 2014, when she invented New York City.

@taylorswift / Via instagram.com
She has been doing this for YEARS. The girl from Da Vinci Code is shook.

Columbia

E!
Taylor Swift, queen of clues and cryptology.

BBC One
H/T: @thefactsofshade