During Thursday night’s Capitals game against the Montreal Canadiens, some sharp-eyed viewers noticed that goaltender Braden Holtby was rocking something really interesting under his white away jersey.

Cameras focused on Holtby during a stoppage in play picked up on stars and what appears to be the Capitol Building crest through the fabric.

The design is very, very reminiscent of a retro Caps jersey.

Anyone know what Holtby is wearing under his jersey? Looks kinda like an old school 1998-99 jersey. ⁦@russianmachine⁩ ⁦@moneymetalcakes⁩ pic.twitter.com/YKdHVz3pbE

— Jason Smith (@FOXPhotog) November 2, 2018

@russianmachine I know @Holts170 is using a non-CCM chest protector this season, but do I see an old-school black jersey logo and some stars going on here? pic.twitter.com/XYlztnxY7G

— Kevin Bryant (@ArmadilloThumb) November 2, 2018

🤔🤔🤔

The Capitals introduced the Capitol Building crest in the mid-nineties but stopped using it before Backstrom joined the league in 2007, although he did put that jersey on at his draft in 2006.

There are some differences between that jersey and whatever Holtby is wearing, as the original did not have stars angling up from the chest to the shoulders.

Photo: capsjerseys.com

We’re not sure yet if this is a modified and personalized chest protector or Olie Kolzig dressing up as Holtby for Halloween (or vice versa), but the retro jersey is probably to blame for Holtby’s hilarious midgame misstep.

Update: Several readers have pointed us to an obscure CBC story that shows what we were seeing last night. It’s actually Holtby’s new chest protector made by Kenesky Manufacturing Inc. The navy blue chest protector appears inspired by the Capitals former Capitol dome jersey.

Photos: Kenesky Manufacturing Inc.

Mystery solved!

Full RMNB Coverage of Caps at Canadiens