The 1st Annual iHeartRadio Music Awards 2014 are here with major celebrities scheduled to attend the massive event. Performances by Shakira, PitbullBlake SheltonPharrellKendrick LamarLuke BryanEd SheeranBastilleAriana GrandeArcade FireThirty Seconds To Mars and the premiere of a brand new Michael Jackson tune, "Love Never Felt So Good." As presenters scheduled to appear are Jennifer Lopez, Selena Gomez, Hilary Duff, Adam Lambert, Mel B, Ryan Seacrest, Jason Ritter, Joe Manganiello, Sean "Diddy" Combs, Ashley Greene and many more. The show will air live from the historic Shrine Auditorium in Los Angeles had music fans in control of of the winners as the cast their votes on popular social media networks like Facebook and Twitter. Scroll-through the photo gallery above and tell us who was the best and worst dressed of the night!

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An iHeart Radio Instagram Award has been added to the lineup with fans voting using hashtags to cast their decision. Competing for this accolade are Rihanna, Harry Styles from One Direction, Selena Gomez, Austin Mahone and Ariana Grande. The winner will be revealed during the telecast. iHeart Radio Music Awards Nominees: Artist of The Year -- Imagine Dragons, Justin Timberlake, Macklemore & Ryan Lewis, Maroon 5 and Rihanna. Song of The Year -- "Hold On, We're Going Home," Drake featuring Majid Jordan, "Mirrors," Justin Timberlake, "Radioactive," Imagine Dragons, "Stay," Rihanna featuring Mikky Ekko and "The Monster," Eminem featuring Rihanna. Best Collaboration -- "Holy Grail," Jay Z featuring Justin Timberlake, "Stay," Rihanna featuring Mikky Ekko, "Suit & Tie," Justin Timberlake featuring Jay Z, "The Monster," Eminem featuring Rihanna and "Timber," Pitbull featuring Kesha.

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Best New Artist -- Florida Georgia Line, Icona Pop, Imagine Dragos, Lorde, Macklemore & Ryan Lewis and Passenger. Country Song Of The Year -- "Boys 'Round Here" (Blake Shelton), "Highway Don't Care" (Tim McGraw with Taylor Swift), "It Goes Like This" (Thomas Rhett), "Mine Would Be You" (Blake Shelton) and "That's My Kind Of Night" (Luke Bryan). Hip Hop/R&B Song Of The Year -- "Blurred Lines" (Robin Thicke featuring T.I. & Pharrell), "Hold On We're Going Home" (Drake featuring Majid Jordan), "Holy Grail" (Jay Z featuring Justin Timberlake), "Pour It Up" (Rihanna) and "Started From The Bottom" (Drake). EDM Song Of The Year -- "Get Lucky" (Daft Punk featuring Pharrell), "Stay The Night" (Zedd featuring Haylel Williams), "Summertime Sadness" (Zedd featuring Haylel Williams), "Sweet Nothing" (Calvin Harris featuring Florence Welch) and "Wake Me Up" (Avicii). Alternative Rock Song Of The Year -- "Demons" (Imagine Dragons), "Do I Wanna Know?" (Arctic Monkeys), "Pompeii" (Bastille), "Royals" (Lorde) and "Safe and Sound" (Capital Cities). Best Lyrics -- "Wake Me Up" (Avicii with vocals by Aloe Blacc), "I Love It" (Icona Pop featuring Charl XCX), "Say Something" (A Great Big World), "Same Love" (Macklemore & Ryan Lewis) and "Wrecking Ball" (Miley Cyrus). Best Fan Army -- Arianators (Ariana Grande), Little Monsters (Lady Gaga), Lovatics (Demi Lovato), Mahomies (Austin Mahone), Rihanna Navy (Rihanna) and Swifties (Taylor Swift).