Not sure you need LoRA to do these things? The below prompt, on most models (which is unchanged from your example), will generate almost the identical on/off pose you have....

On/Off. Two photographs of a young woman with fair skin and wavy, shoulder-length blonde hair, smiling in two side-by-side shots, she stands in a relaxed, confident pose. In the left photo, she's wearing a white ribbed top with a floral pattern and matching high-waisted thong. Her hands are behind her head. Her flat chest is partially covered by a bra, and her flat stomach and slim, toned figure are clearly visible. On the right, she's using her right hand to pull down her thong, revealing her pubic hair, and with her left hand, she's lifting her top, exposing her nipples. In the background is a yellow textured wall, and she's leaning against a white rectangular appliance, possibly a washing machine. The lighting is natural, highlighting her smooth skin and subtle shadows.