I guess I don't think it was ridiculous to put leia into the slave outfit considering the context of the situation. I mean she was a sexy as hell intruder captured inside the palace of an infamous scoundrel. Personally I don't think any less of Leia the heroein because of the outfit, its far from the only time I have seen a woman I admire in hot looking attire.
Considering she literally strangled Jabba to death with the chain keeping her captive