A young girl named Natalie watches Pretty Woman in an early 1990s sitting room. Her mother pours a glass of wine and warns that they don’t make movies about girls like us. Except Hollywood does. Isn’t It Romantic is a romantic comedy disguised as a parody of the genre. The characters run through every convention of the sometimes unfairly maligned genre while proclaiming that they are not falling for its charms. You can guess what happens next. Adult Natalie (Rebel Wilson) is disenchanted with idea of love and a cynic about romantic comedies. After a mugging, she wakes up in…