The former High School Musical actress confirmed prior to the broadcast that she would go ahead and perform the show in her father's honour.
Writing on Twitter, Hudgens said: "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 received huge praise for her performance, with many naming her rendition of 'There Are Worse Things I Could Do' as one of the evening's highlights (watch the performance below).
There are worse things you could do, Rizz (@VanessaHudgens). Much worse! #GreaseLivehttps://t.co/djENXG5qbT— GREASE: LIVE (@GoGrease) February 1, 2016
West End Frame sends their best wishes to Vanessa Hudgens and her family
With a cast also including Aaron Tveit (Les Miserables/Wicked) as Danny Zuko and Julianne Hough (Rock of Ages) as Sandy, Grease LIVE will be broadcast on ITV2 at 8pm this Wednesday.