Fox

The show must go on for Vanessa Hudgens -- despite her father's death less than 24 hours before the Fox live broadcast of Grease Sunday night, the consummate performer got on stage and delivered the performance of a lifetime.

Playing Rizzo, Hudgens sang and danced her heart out -- in honor of her dad. The actress dedicated the performance to him, she announced in this Tweet: "I am so sad to say that last night my daddy, Greg passed away from stage 4 cancer. Thank you to everyone who kept him in your prayers. Tonight, I do the show in his honor."

Hudgens' friends and fellow performers took to social media to weight in on their girl's professionalism and acting chops. Pal Ashley Tisdale wrote, "I wouldn't expect anything less @VanessaHudgens is killing it! So proud of my girl #GreaseLive." Vanessa's boyfriend Austin Butler Tweeted, "WOW @VanessaHudgens singing 'Worst Things' had me in tears. Just brilliant #GreaseLive." Co-star Mario Lopez wrote, "Imagine if you had a day like @VanessaHudgens & performed like that. Wow.What a strong woman.My new hero#GreaseLive."