Swift's hit song I Knew You Were Trouble and Cyrus' We Can't Stop will go head-to-head with Lovato (Heart Attack), Anna Kendrick (Cups) and Bieber's ex, Selena Gomez (Come & Get It), for the title of Choice Single: Female Artist, while the Baby hitmaker's Beauty And A Beat is up for the male equivalent, alongside Bruno Mars (Locked Out Of Heaven), Pitbull (Feel This Moment), Justin Timberlake and Jay Z (Suit & Tie), and Robin Thicke, T.I. and Pharrell Williams (Blurred Lines).
We Are Never Ever Getting Back Together by Swift is also nominated in the categories of best break-up tune and country song.
Candie's Choice Style Icon will be a fight between Cyrus, Lovato, Emma Watson, Lea Michele and Ariana Grande, while the Choice Twitter Personality will be a competition between Bieber, Lady Gaga, Rihanna, Katy Perry and U.S. President Barack Obama.
In the acting categories, Choice Movie Scene Stealer will be a tight race between the likes of Channing Tatum (G.I. Joe: Retaliation), Kellan Lutz (The Twilight Sada: Breaking Dawn - Part 2) and Joseph Gordon-Levitt (The Dark Knight Rises), while the Tv nominees include Cyrus for her stint in Two and a Half Men, as well as Glee co-stars Chord Overstreet and Heather Morris.
Singers Blake Shelton and Adam Levine of The Voice scored nominations for Choice Tv Personality - Male, and Lovato (The X Factor) and model Heidi Klum (America's Got Talent) picked up mentions for the female equivalent.
The full list was released on Monday (01Jul13), over a month after the first wave of nominations were announced in May (13).
The winners will be unveiled during a special ceremony in Los Angeles on 11 August (13).