‘HOW have I never noticed this?’ The Grinch fans are left up in arms after a viewer spotted a hidden costume FAIL in the 2000 Jim Carrey classic… so, can YOU guess what it is?

• TikToker @redcobweb points out a fail in How the Grinch Stole Christmas
• A scene in the movie features a flaring error with Carrey’s costume 
• To date her TikTok video has been watched more than three million times 
• Many commenters have expressed their surprise at not spotting the error before – particularly as the movie was released more than 20 years ago 

By Sadie Whitelocks For Dailymail.com

Published: 12:24 EST, 19 December 2022 | Updated: 13:38 EST, 19 December 2022

Don’t blink or you might miss this one.  

One eagle-eyed viewer has spotted a mistake in Jim Carrey’s 2000 Christmas movie How the Grinch Stole Christmas.

Posting about her observation to TikTok, @redcobweb highlights how in one scene Carrey is missing his yellow contact lenses and appears with his natural brown eyes opened wide. 

She explains in the video, as the movie plays in front of her: ‘So every time I watch the Grinch I notice this one little mistake they made where they forget either to put his contacts in or they forgot to edit them in afterwards and so just Jim Carrey’s brown eyes… they’re just there.’

A TikTok user has pointed out an error in 2000 movie The Grinch, revealing Jim…