Cindy Lou Who Drops Rock Version Of 'Where Are You Christmas' & Fans Are Going Nuts

Cindy Lou Who is all grown up — and taking fans back to the year 2000. Taylor Momsen starred in "How the Grinch Stole Christmas" 25 years ago, and now, her band, The Pretty Reckless, has a new music video covering "Where Are You Christmas?" — the same song Taylor sang in the film.