The 18-year-old singer sang “Tee Shirt” on the show, which is featured on The Fault In Our Stars‘ soundtrack, as well as her own new album, Fire Within.
Birdy just wrapped up a two month tour with Christina Perri.
“Can’t believe it’s the end of the tour, been out here for nearly two months it’s one so quickly, sad to say goodbye to our bus. I’ve had the most incredible time thank you so so much! Xxx” she wrote on Twitter.