We don’t need to tell you that the red carpet is the whole entire point half the fun of watching awards shows like the Oscars. Tonight’s looks were no exception, of course, but the real fun happens when we get to indulge our inner voyeur and see all the behind-the-scenes prep work our fave celebs put into Hollywood’s biggest night. Brie Larson, for instance, started Oscars day with a hearty and delicious-looking breakfast. Rachel McAdams spent the day getting ready with her celeb fave (and total lookalike) makeup artist sister Kayleen, and it was through her Instagram that we were able to get a glimpse at Rachel’s TRUE glam secret. Take a look:

Rachel McAdams Oscars Prep

That’s right: champagne. Why wouldn’t you have some on hand to celebrate a Best Actress in a Supporting Role nomination (which Rachel earned for Spotlight)? Of course, the rest of the seemingly minimal supplies make sense given Rachel’s understated makeup look at the awards, which paired perfectly with her richly hued if also understated August Getty Atelier gown. Sisters doing it together. We love it!

What’s your secret for getting ready for glam nights out? Let us know at @britandco!

(Photos via @kayleenmcadams and Jason Merritt/Getty)