Rebel Wilson's latest post on Instagram gives, the star is in fact celebrating.ALSO: HELLO! launches Jubilee T-shirt collection to celebrate Queen Elizabeth in styleShe surprised, and then promptly delighted fans with a picture lying seemingly comatose on a hospital bed, but it's actually for a good reason.The picture is actually to commemorate the success of her latest film, Senior Year, which was released on Netflix on 13 May.WATCH: Rebel opens up about illness that changed her lifeMORE: Viewers all saying the same thing about Rebel Wilson's new Netflix film Senior YearIn the image, she appears wearing a hospital gown with a pulse oximeter on her finger, her eyes closed while her mouth is open, and she is even sporting a hospital band.Though fans were initially concerned, she quickly clarified in her caption: "WHAT THE SLUT?! SENIOR YEAR is the Number 1 movie on Netflix after only 1 day!! Whoa!!!"Her followers inundated her comments section with praise, writing: "I watched it and it was amazing!!! Love you Rebel," and: "Rebel, I watched your movie today, you're truly wonderful!! You really are amazing," as well as: "Loved the movie.