The tag implication #64253 venus_figure -> voluptuous is pending approval.

Reason: As the wiki defines venus_figure:

Venus figure describes female and gynomorph characters with extremely curvy figures, named for the resemblance to prehistoric Venus Figurines.
Venus figure characters will have a a combination of massive hips, breasts, buttocks and thighs and can be described as "super-voluptuous" or likened to a "fertility goddess"...

As the wiki defines voluptuous:

"Voluptuous" — for tagging purposes on e621 — describes a feminine curvy figure with especially wide hips and thick thighs, a generally "thick" or "wide" waist/midsection (while still narrower than the hips), big breasts, and naturally, a big butt. Voluptuous characters can be described as "full figured" or "thick".

venus_figure is more or less "extremely voluptuous" and thus it should implicate voluptuous ala hyper_breasts -> huge_breasts.