Selena Gomez was offered a small role in the popular sitcom The Big Bang Theory as Amy's step-sister. However, she had to turn it down due to her busy schedule conflicting with filming for the show. The writers of the show had an idea for an episode where Amy complains about her awful step-sister and wanted Selena Gomez to play the part.
Unfortunately, this was not possible, but fans now know that the Only Murders in the Building star is a big fan of the show, as she posted a picture of herself watching it on her laptop before a concert in 2016.