La Sylphide and Giselle are two ballets with fairly similar plots. Both tell of forbidden love- but in La Sylphide the main male character forsakes his fiance for a mythical creature that turns out to figment of his imagination, while in Giselle, the main male character forsakes his wife for Giselle. Both are tragedies- in La Sylphide, the sylph eventually dies and Ruben is left to mourn his “lover’s” death and in Giselle, she finds out that her beloved is married and after her death, he mourns her. Both ballets have similar storylines- the first act is realistic and shows the importance of the townspeople. The costumes are very peasant-like and realistic for the time. But the second act in both performances is mystical and dream-like. Overall, both ballets have extremely similar ideas and themes. I watched La Sylphide, but I saw the ballet Giselle when I was younger. I liked both of them- but I think La Sylphide was more interesting to watch.