The "Ugly stepsisters" are characters in the fairy tale and pantomime, Cinderella. They are the daughters of Cinderella's cruel stepmother, who treat her poorly. The "ugly stepsisters" have been in variations of the story from as early as researchers have been able to determine.
In the ancient Chinese story of Ye Xian, the "ugly sister" character is the titular character's half-sister and is named Jun-li. In contrast to the beautiful and talented Ye Xian, Jun-li is unattractive and too lazy to learn any particular skills. Jun-li and her mother, Jin, maltreat Ye Xian, forcing her to clean the cave in which they reside. Jun-li and her mother also put an end to Ye Xian's newfound happiness after they discover that Ye Xian's late mother has reincarnated in the form of a ten foot long golden carp, which grants her wishes. Jun-li and her mother slay and eat the fish, not knowing that Ye Xian has salvaged the creature's bones and buried them beneath her bed, and once again her wishes are granted. After Ye Xian loses a golden slipper at the local festival, the warlord who discovers it visits the family cave, declaring he will marry the woman whose foot fits the slipper. Jun-li and her mother fail to get their feet into the slipper, but Ye Xian succeeds and dons the finery she wore at the festival. Outraged at their cruelty toward her, the warlord exiles Jun-li and her mother to the wilderness, where they are killed by a rain of flying stones.
In Charles Perrault's original fairytale, the sisters were Cinderella's stepsisters, and are described as "proud and haughty" rather than ugly, though Cinderella is described as being "far lovelier than her sisters, though they were always dressed fashionably." The unnamed younger stepsister is described as being not as rude or spiteful as the elder, who is named Charlotte (Javotte in French). In Jacob and Wilhelm Grimm's version entitled Aschenputtel the unnamed stepsisters are described as having, "beautiful faces and fair skin, but hearts that were foul and black", and are portrayed in a much more malicious light than Perrault's version. In Perrault's version of the tale, the stepsisters are forgiven for their cruelty and Cinderella invites them to the palace to live with her, and she marries each of them to a wealthy lord. In the Grimms' considerably much darker version of the tale, the stepsisters attempt to trick the Prince by cutting off their heels and toes in order to make the golden slipper fit their foot, but the Prince spots the blood on their stockings and realises they are imposters. Once Aschenputtel is recognised by the prince, the stepsister invite themselves to Aschenputtel's wedding, where Aschenputtel summons the pigeons and doves to attack the stepsisters' faces, mutilating their beauty and tearing their eyes out, sentencing them to a lifetime of blindness as punishment for their diabolical behaviour. In the opera La Cenerentola (1817) by Gioachino Rossini and Jacopo Ferretti, the sisters are named Clorinda and Tisbe.
Traditionally, the two stepsisters are played by men (although in some adaptions, they are played by women, whereas in others they are played by a man and a woman) and their attire is outrageous and garish, parodying the latest fashions. A favorite gag is to have one sister tall and thin, the other short and fat, only for them to state that they are "identical twins." They portrayed as unruly man-eaters who provide much of the story's comic relief, flirting with men in the audience and repeatedly insulting each other yet teaming up to torment Cinderella. The sisters are extremely jealous of Cinderella, as she is very beautiful and they are very ugly. In order to ensure no man will want to marry her, they reduce her to their maidservant and force her into waiting on them non-stop and doing all the dirtiest kitchen jobs. Sometimes Cinderella has an alternate name, such as "Isabella", "Ella", Arabella", or more recently, "Heidi", and the jealous stepsisters rename her "Cinderella" due to the fact she mostly sweeps and cleans the firesides and is constantly covered in ashes and cinders. When Buttons, the Baron's footman delivers the news of the Royal Ball, the stepsisters plot to claim the prince as their own. When they realise Cinderella has also been invited, they force her, or trick her, into tearing up her ticket. They then strut off to the Ball and are amazed and horrified when Cinderella appears with the help of her fairy godmother. The Ball is often used as a comical scene in which the sisters humiliate themselves in an attempt to charm the prince, who is too enchanted with Cinderella to notice them. Then Cinderella flees at midnight, leaving one of her glass or crystal or silver slippers behind.
The next day, the Prince arrives with the news he will marry whomsoever the slipper fits. The two sisters fight and quarrel over who the shoe will fit. It is traditional to have one sister concealing a false leg beneath her skirt in an attempt to fool the prince. Another tradition is that one sister has yards and yards of multicoloured stockings beneath her skirt, which must be comically removed before trying the shoe on. When the shoe does not fit, the Prince allows Cinderella (who has either been tricked into leaving the house or locked in the cellar) to try it on. When the shoe fits, the stepsisters are horrified. Their fates are dependable upon which version is being told. Sometimes they are forgiven for their cruelty, other times they are demoted to servants in the prince's castle, or sometimes the Baron Hardup at last puts his foot down and stands up to them.
In more recent adaptations, the role of the wicked stepmother has been reduced in prominence and the sisters assume her role to a degree. Sometimes she has died or other times she has absconded with the family fortune and left Cinderella to cope with her two ugly daughters.