"I am so sad to say that last night my daddy, Greg passed away from stage 4 cancer," she wrote, which was retweeted by her younger sister, Stella Hudgens. "Thank you to everyone who kept him in your prayers."
Despite the tragedy, Vanessa still plans to take part in the musical, saying she will dedicate her highly-anticipated performance as Rizzo to her late dad.
"Tonight, I do the show in his honor," she continued.
Then in August, she revealed that Greg was sick with cancer while accepting an award for Breakthrough Performer at the Industry Dance Awards in Los Angeles. The news came less than one year after her boyfriend, Arrow star Austin Butler, lost his mother to cancer in September 2014.
"Let me tell you, I hate cancer. I hate cancer with every cell of my being," Vanessa shared onstage. "This award, it means a lot to me but I dedicate it to my boyfriend's mom, Lori, my dad, and to all the families out there who are struggling with this, because it really takes a strong person and a strong family to be able to help those out who are going through this."
In addition to his daughters, Vanessa and Stella, Greg is also survived by his wife, Gina Hudgens.