The 19-year-old singer/songwriter - who won her place in this year’s list after winning our Brand New Unsigned competition in November – topped the poll with 40% of the votes, beating the likes of Gabrielle Aplin, HAIM, Tom Odell and K Koke.
On winning our annual search to find the best in new music, Ebony told MTV News: “I'm so overwhelmed that my fans have made this win possible for me!
“It's all down to their ongoing support and hard work that I have won MTV's Brand New of 2013 and I can't thank them enough.”
Day added: “This is a dream come true for me, I've never been happier."
With over 260,000 votes and our nominees running massive social media voting drives, this year’s Brand New campaign has been the most successful to date.