Leia's clothes have been conservative up until the point of her capture by Jabba. As she wears clothes that show she has authority revealing no skin as Leia is a conservative princess with moral ideals and how to dress properly.
Leia being captured by Jabba against her will is meant to represent that she has become a woman. But, having been captured by Jabba her only duty is to serve him as her slave girl, and as a women her only role is to be silent and stay in a submissive position on the dais, as Jabba sees Leia only for her beauty and to display it as she is a slave and nothing more. Transfigured from liberator to captive, Leia is shown nearly naked, wearing nothing but a gold bikini and choker metal collar. Jabba holds Leia by this collar with a chain attached to it, forcing her to recline in front of him, at times pulling her tightly against his belly while he strokes her, a luscious prize subject to the rapacious appetite of her captor. Leia is put on display, and her focal point is her form, and not her function as a rebel leader instead Jabba sees the princess for only her beauty. Leia is seen as a model of control – more specifically, as a model of the disciplined body. Leia illustrates what follows from "chaining the body," Reading the image of her thin body as a kind of text in code, her ideal form is shown to be the consequence of constraining desire, that Jabba desires of her.
In contrast Jabba is a big fat slug that is nothing but filth, drinking, his flesh appears clotted and gelatinous and drooling showing no concern of his appearance. Which, is the opposite of Leia as her appearance is completely changed from being stripped out of her Boush outfit. Leia is fit, her skin is tight and her muscles are clearly defined and smooth. Leia is thin and toned, well groomed. Her hair is pulled back, put into a large bun, with a braid hanging down her shoulder. Leia is dolled up with an excess of make-up to show her femininity. Her outfit is nothing more than a gold metal bra with thin black strings attached from the back exposing her nakedness from her back, and stomach. Her bottom is nothing more than two gold triangular chastity plates covering her vagina and half of her buttocks from her hips that are connected together by two open oval hip fasteners, which left her legs exposed and the sides of her butt cheeks exposed. With design of a woman's overies embossed on them showing her sexual availability, and two violet thin Lashaa silk skirts hanging from the plates. Along with this a pair of Jerba leather boots, with a bracelet and armband. Leia was vulnerable.
Both Leia and Jabba are different in appearance as Leia represents beauty with her appearance in her slave outfit. Leia is clean in appearance while Jabba is nothing but filth. Leia is beauty and Jabba the Beast.
Jabba sees women as nothing more than sex objects. Once he catches Leia and Han she looses all control and forced into a life of slavery. Leia did not choose to wear the slave outfit; it was Jabba that forced her in minimally dressed as possible and in one of the most humiliating things he could do to her. Leia was a strong woman and to place her in this outfit showcasing her as his prize was pretty detrimental to her self-respect. But you could also see the story as a sublimated reaction to Leia's emotional and sexual awakening.
Once revealed to be a woman and enslaved by Jabba, Leia is only valued for her appearance. The only thing Jabba can place on Leia is her beauty as he turns her into his sex slave. She has nothing to say as a slave because Jabba expects nothing out of women except to be scantly-clad and silent, and only values Leia's beauty.
She sits on the throne in front of Jabba in a regal submissive position while the Lashaa silk hanging from her chastity plates drapes over the dais in Jabba's palace at his tail and presents the slave figure very well. Being forced to be silent we can still tell she has many things on her mind by her facial expressions which is given away when her words cannot, and of what her thoughts are going around her but is still restricted from speaking. Leia is forced is expose her sexuality and is reduced to a submissive sexual object.
Jabba's lechery over Leia is to show his power over her, as times reminding Leia of her place as his slave. When Luke is negotiating with Jabba. Jabba is constantly pulling on Leia's chain reinforcing his dominance over the scantily-clad Leia. On the Sail Barge Leia resists control when Jabba yanks on her chain once as Leia glances at him and ignores procedding to look out that Sail Barge window to see her friends. But Jabba yanks on her chain causing her to run to him which threatens to overwhelm the individual, in this case Leia. In some circumstances, this fear of existence is directed toward the body, sometimes the female body, but there's no need to focus exclusively on the feminine, as he is concentrating on Leia more than her body when he tells her she will learn to appreciate him. The problem isn't the female body, but material existence generally, as Jabba sees Leia as nothing more than a sex object. Jabba promotes resistance to the prevailing standard of her beauty as he desires Leia by drawing attention to the damaging influence of widely disseminated of Leia in her gold bikini. Jabba desires to control Leia mentally and physically. While Leia's captivity focuses mostly on the despot Jabba, in reality the scene empowers a more oppressive master in the form of Leia as Jabba is taken by Leia as he states "Soon you will learn to appreciate me". As Leia is a leader, but although a slave she has control over Jabba because of her beauty as by stating this to Leia he is fixated towards her and likes Leia more than he is leading on.
Jabba although the beast he is the king on the throne, and Leia being beauty is Jabba's princess on his throne, as she is lavished by him. Her appearance altered drastically to beautify her and dress her up in revealing skimpy gold and silk slave outfit to show his wealth and power over her while also showing her status as a princess and slave to the mighty Hutt.