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Before fulfilling her hosting duties, the singer hit the green carpet in a metallic Corey Lynn Calter mini dress and spiked heels.
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The Ugly Betty star turned up in a curve-hugging Nanette Lepore pencil dress to receive her award for Choice TV breakout.
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The Choice female hottie winner was the picture of sunshine in a sweet yellow Yigal Azrouel frock and white platform heels.
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Making the most of her killer body, the singer opted for a tight polka-dotted Moschino Cheap & Chic strapless dress.
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The singer-actress came ready to present in this adorable one-shoulder hot pink chiffon Malandrino dress.
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Keeping it simple, the rap superstar and presenter wowed in a silk YSL jumpsuit, wide leather belt and Spear hoop earrings.
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The One Tree Hill actress, who scored three Choice surf boards for her big screen roles, sizzled in a super-tight Hervé Légér striped mini and red Jimmy Choo heels.
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The Hills star and Teen Choice winner showed off her design talents in a one-of-a-kind silk teal bubble dress from her namesake line.