Hadid sported a black high-neck David Koma dress with cut-out rings along the arms, chest and stomach. She completed the look with a pair of sky-high chrome stilettos and diamond stud earrings. Hadid opted for light makeup and wore her long locks loose for the occasion.
Interestingly enough, the hot frock looked incredibly similar to the navy blue mini she rocked from the same designer just one night earlier while hosting the Maybelline New York Beauty Bash in Los Angeles.
Sexy and confident? It doesn't get much better than that!
Perhaps that's one of the reasons why she was honored with the Our New Girlfriend Award at the awards show. Before accepting the honor, Hadid was treated to a special musical introduction from Robin Thicke, who performed his song, "Give It 2 U."
Amid recent rumors that Hadid called it quits with Zayn Malik, an eyewitness tells ET that she was "laughing" and acting "embarrassed" as she took the stage to accept the honor.
"So I thought I was going to come wing it. All week I was like, 'I'll be good, I'm just going to go,' and then I woke up this morning, and I was like, 'Gigi, there's no way you're going to be able to be calm or cool in front of Kobe [Bryant] ever in your life,'" she joked during her acceptance speech.
Hadid is a huge fan of Bryant, having proclaimed her love for the former Lakers star when he retired in April.
In her speech, the blond beauty revealed that she called a friend for advice about what jokes she could say on stage. The pal suggested that Hadid should "try to think of something you did mean to a crush in middle school." That's when Hadid realized she didn't have one of those stories!
"I've always been kind of like a good girlfriend," she explained. "Even in middle school when I had crushes, I've always been kind of nice. But what I appreciate this for is that everyone that is here to support me and would even think of me for this award, you guys let me be funny and you let me be myself and you support me for the things besides how I look and besides what models used to be only recognized for, and I really appreciate that, so thank you."
After receiving a solid round of applause, Hadid ended her speech by thanking Spike TV and the troops "here tonight, at home, with us in spirit." She also acknowledged Muhammad Ali, who died on Friday at age 74 from a 32-year battle with Parkinson's disease.
"I didn't get to post anything yet, so I just wanted to say, Muhammad Ali has touched me so much in my life," she said. "I'm so grateful to have met him, so I just wanted to openly say rest in peace, Muhammad. You're the champ."
The Guys' Choice Awards air June 9 on Spike TV.
Since news broke that the three-time World Heavyweight Champion died, athletes, entertainers and other celebrities have been paying their respects to Ali on social media. Hear more of the touching tributes in the video below.