This LoRA is intended to cause wardrobe malfunctions. It has two activation keywords: downblouse and nipslip
Downblouse produces a view down the subject's shirt, while nipslip permits nipples to escape their prisons. The two keywords can be used together (but don't need to be), and can even be used in negative prompts for more control over the composition.
You can also eschew the trigger words and just increase the weight of the LoRA to encourage wardrobe malfunctions.