Question: when does princess fiona turn into an ogre

title: Princess Fiona
text: In the first film of the series , Fiona first appears as a princess bride selected by Lord Farquaad as part of his plan to become king . She encounters Donkey and Shrek , and at first the group holds hateful feelings towards one another . However , tensions begin to smooth over gradually and Shrek and Fiona begin to develop a close connection and fall in love . Late one night , Donkey learns that because of a magical spell that had been cast on her years before , Fiona transforms into an ogress every night , but by morning reverts to her regular human form . Shrek overhears part of the conversation , and believes that Fiona finds him too ugly for her , leading him and Fiona to get into a misunderstanding followed by a heartbroken Shrek bringing Lord Farquaad to get Fiona . Shrek and Donkey interrupt Fiona 's wedding ceremony and prevent her from kissing Lord Farquaad , who then realises that Shrek is in love with Fiona and mocks him out loud . When the sun sets , Fiona turns into an ogre , and a disgusted Lord Farquaad orders Fiona detained and Shrek killed though he is almost immediately eaten by a dragon instead . Shrek and Fiona profess their love and they kiss , which breaks Fiona 's curse , though she is now permanently an ogress . At the end of the movie , Shrek marries Fiona . 

Answer: answer: Late one night, Donkey learns that because of a magical spell that had been cast on her years before, Fiona transforms into an ogress every night, but by morning reverts to her regular human form. Shrek and Fiona begin to develop a close connection and fall in love When they profess their love and kiss, which breaks Fiona's curse, though she is now permanently an ogress.