American singer-songwriter Tiffany Alvord first captured hearts as a teen when she started posting cover songs on YouTube back in 2008.
Her channel racked up millions of views over the years, with her rendition of Katy Perry's "The One That Got Away" alone earning 43 million views.
Now in her 30s, Alvord looks completely different — and fans are buzzing about her transformation.
[Click here to see what she looks like today!]