If there is one song you will be left struggling to get out of your head after watching “You’re Cordially Invited,” it will be “Islands in the Stream.” There are no less than three versions of the Dolly Parton and Kenny Rogers song sung by the cast in the film — but are they actually singing themselves?
Now streaming on Prime, the movie — directed by “Forgetting Sarah Marshall” and “Neighbors” vet Nicholas Stoller — centers on two families who unknowingly have weddings double booked at one tiny inn. One is for Jenni (Geraldine Viswanathan), booked by her dad Jim (Will Ferrell).

