See the First Photo of Julianne Hough as Sandy in ‘Grease: Live’!

You better shape up!

Julianne Hough took to Instagram on Monday, Nov. 23 to debut an image of herself as Sandy in the upcoming TV musical Grease: Live—a special adapted from both the Grease Broadway play and 1978 movie.

"Here's a first look at @aarontveit @vanessahudgens and I for #GreaseLive," the 27-year-old actress captioned the snapshot, in which she stands alongside co-stars Aaron Tveit (as Danny Zuko) and Vanessa Hudgens (as Betty Rizzo).

RELATED: Mario Lopez Joins the Cast of 'Grease: Live'

"I can't wait to play the role of Sandy, and be with this incredible cast!" she continued. "Don't miss it: Sunday, January 31st on @FOXTV! #youbettershapeup."

The highly-anticipated TV musical will also star Mario Lopez (as Vince Fontaine), Carly Rae Jepsen (as Frenchy) and Keke Palmer (as Marty Maraschino).

To get excited for the premiere, see the original cast of Grease then and now!