It seems Olivia Newton-John was happy to pass her Grease baton on to Julianne Hough!

"It's huge that I got her blessing," Julianne, 27, told People of playing Sandy in the upcoming Fox production Grease: Live.

olivia newton-john and julianne hough 'grease'
Getty Images; R/R

Olivia (left) and Julianne (right) as Sandy.

Last October, Julianne met Olivia — who portrayed Sandra Dee opposite John Travolta in the 1978 film version of the musical — when the 67-year-old actress guest-judged alongside her on an episode of Dancing with the Stars. "She's exactly who you hope she would be — so awesome and supportive," Julianne said of Olivia.

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And for Julianne, playing Sandy in Grease: Live — which is set to air on Sunday, Jan. 31 at 7 p.m. on Fox — is truly a dream come true! "Grease was the first movie that I saw that I realized you could sing and dance and act all in the same movie," she said.

Click through the gallery below to see the original Grease cast then and now!