Vanessa Hudgens lost her father, Greg, to cancer Saturday, the day before she was scheduled to perform in Fox's production of Grease: Live!br The actress, cast as Rizzo in the live production, tweeted the news of her sad loss Sunday morning, then followed up with a tweet saying she would perform in the musical later in the day "in his honor."br Hudgens spoke in August about her father's battle at the 2015 Industry Dance Awards & Cancer Benefit Show.br "Last year, my boyfriend, Austin (Butler), lost his mom, Lori, to cancer, and my dad has just been recently diagnosed with stage 4 cancer.br And, let me tell you, I hate cancer.