Vanessa Hudgens definitely had a guardian angel looking over her last night when she delivered a solid performance as Rizzo On NBC's Grease: Live!

However, Breaking Celebrity News has exclusively learned that Hudgens – whose father Greg died at age 65 just hours prior to her reprising the iconic role – suffered a "hysterical breakdown" once the show was over.

"Everyone was really trying to just make sure that she was okay," an on-set source told Breaking Celebrity News.