Twitch will ban people pretending to be naked

We don’t permit streamers to be fully or partially nude, including exposing genitals or buttocks. Nor do we permit streamers to imply or suggest that they are fully or partially nude, including, but not limited to, covering breasts or genitals with objects or censor bars. We do not permit the visible outline of genitals, even when covered. Broadcasting nude or partially nude minors is always prohibited, regardless of context.

For those who present as women, we ask that you cover your nipples and do not expose underbust. Cleavage is unrestricted as long as these coverage requirements are met and it is clear that the streamer is wearing clothing.

For all streamers, you must cover the area extending from your hips to the bottom of your pelvis and buttocks. 

https://www.theverge.com/2024/1/3/24023829/twitch-ban-people-pretending-naked-implied-nudity-policy