HOW did we not notice this before?

Katy Perry is certainly no shrinking wallflower but even this piece of bling is seriously out there. She's known for wearing bold prints and always keeps us guessing when she appears on the red carpet but according to Refinery29, there's one piece of Katy Perry that we have never noticed. Reportedly, ALL the way back in September 2015 Katy treated herself to the gift of a gold teeth - but not any old gold tooth. Of course not. Katy went and got the Nike tick symbol attached to her tooth, which is on her upper left canine, with the tooth only making an obvious appearance in photos at the premiere of Office Christmas Party. Given the star's fondness for Adidas clothing, it seems a little strange that she'd dedicate a tooth to a rival sports brand. Fans couldn't believe that A) Katy has a Nike tooth and B) they hadn't seen it by now.

3:29 AM and genuinely wondering what crossed Katy Perry's mind to get a Nike Swoosh adorned on her upper-left-side canine

— Zunerah Syed (@ZunerahSyed) December 10, 2016

Why Does Katy Perry Have A Gold Nike Symbol On Her Tooth? https://t.co/N4lDbk1GPh — Enoch Jeremiah (@EnochJeremiah7) December 8, 2016

Really? The logo of nike in your tooth. What's up, you're an adidas woman. ?? @katyperry pic.twitter.com/OxOOLeCXmG

— Noelia Katycat❤? (@99burgosNoelia) December 8, 2016

One true fan however, tweeted about it way back in September 2015, clearly two steps ahead of all of us.

SHE LET ME PHOTOGRAPH HER NEW NIKE TOOTH LOL pic.twitter.com/8MGAaKYFNt — Carly #LAKatyCat (@carlythekatycat) September 9, 2015

So it turns out you truly do learn something new everyday. Gold Nike tooth for Christmas, anyone?

Images via Twitter