Robin Roberts revealed Monday on Good Morning America that Bryan (who originally competed on season five of the show, landing in 6th place) beat out fashion expert/TV host Carson Kressley, 42, and fellow Disney star Kyle Massey, 20, for the coveted spot.
"Ah! Love you guys!" Bryan tweeted Monday. "This was all because of you! Thank you so much! Xoxo."
The singer will be paired with dancing pro Louis Van Amstel and compete against all-stars Apolo Anton Ohno, Kirstie Alley, Joey Fatone, Shawn Johnson, Bristol Palin, Helio Castroneves, Emmitt Smith, Kelly Monaco, Melissa Rycroft, Pamela Anderson, Drew Lachey and Gilles Marini.