It might have been Kendall Jenner's big night, but we can't stop staring at Gigi Hadid. The supermodel stepped out to celebrate her bestie's 20th and may have inadvertently stolen the spotlight in a jaw-dropping party look. Both style pros selected head-turning plunging necklines, but Gigi managed to keep her look as sexy as it was chic with a cream-colored blouse and black pants. She topped it all off with killer accessories, like her jeweled heels from Giuseppe Zanotti. We hate choosing favorites, especially when it comes to this duo, but Gigi may have won this round. Take a look at both outfits and decide.