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 g₀.
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.