The Grinch’s Cindy Lou Who star Taylor Momsen is unrecognisable now after dramatic transformation

OVER two decades have passed since How the Grinch Stole Christmas came out - and it's still a Christmas classic.

And fans will be delighted to know that the adorable Cindy Lou Who is still singing.

American-actress-turned-musician Taylor Momsen, 28, was just seven when she starred in the 2000 hit movie.

Following the success of the film, Taylor went on to star in Spy Kids 2: The Island Of Lost Dreams, as well as earning the title role in 2002 Hansel And Gretel.

Fans will also recognise her after appearing as Jenny 'Little J' Humphrey in the teen drama Gossip Girl.

However, Taylor left the hit television series after five years in 2011 to focus on her flourishing music career with the punk band The Pretty Reckless, whom she has been with since 2009.

And let's just say, you'd never guess this popular punk star once played sweet and innocent Cindy Lou Who.

With the band's most famous songs including You Make Me Wanna Die and Going to Hell, Taylor has swapped her adorable braided do for peroxide blonde tresses.

Her Instagram shows that she's pretty heavily focused on producing and performing music with her band.

In fact, the group recently released their new single '25' along with their first video in nearly four years.

While her current rock and roll lifestyle may seem like a far cry from her former sweet and innocent character, Momsen actually credits the film with inspiring her love of music.

"The Grinch was the first time I went into a recording studio," she told Today in a recent interview.

"I'll never forget walking into this beautiful studio with a massive console in front of me and putting headphones on and singing into a microphone for the first time.

"It was such an impactful moment in my life. It made me want to make music for the rest of my life. I love being in a recording studio."