Solar system girls: Mars
Mars is Earth's little sister, with a radius of about half of Earth's, and mass about 10% of Earth's. Its surface gravity is about 0.4 gā.
Fans of plump women may also be interested in Saturn and Jupiter.
Notes
Txt2img Flux Schnell, img2img and inpainting Raindrop.
None of my installed anime checkpoints seem to have a grasp on basic astronomy. I eventually had to GIMP a public domain image of the planet in (carefully masking so that I was pasting on the dress only), and inpaint it to look like a print, which took some rerolling even with the Illustrious-XL series.
Original txt2img included in the post for comparison purposes only. Note that when I asked for Mars, Flux actually drew Jupiter. This one came complete with the AI's rendition of the Great Red Spot, which Flux refused to draw earlier when I actually asked for Jupiter.