Julianne, 31, looked amazing in a strapless black fluffy top with a pair of black high-waisted slacks that featured a white pin stripe down the length of her leg. She added pointed black heels and kept her short blonde locks down.
Simon, 59, kept his outfit casual in a dark grey t-shirt, black pants and shiny brown dress shoes.
Gabrielle, 46, rocked a shiny gold and silver sweat suit outfit with nude heels. She pulled her hair back into a sleek ballerina bun and wore natural glam makeup.
Howie Mandel looked dapper in a black and navy blue checkered suit with a navy shirt and a matching tie. Howie, 63, wore his signature eyeglasses and completed his look with black leather sneakers.
America's Got Talent host Terry Crews was all smiles as he posed on the red carpet in a bright orange suit. He added a crisp white button down shirt and a pair of orange shoes.
Actor Greg Morton goofed off wearing a colorful suit designed with words like "Bam!" and black dress shoes.
Comedian Jackie Fabulous wore a tiger patterned gown with mixed medal jewelry and rocked a dark red lipstick.
Whose outfit from the premiere do you like best? Let us know in the comments below!