it has a bunnysuit for the created character component hehe

Theres a mod for Poison to wear a really cute one.

Zattanna is wearing one, minus the ears and bunny tail.

Lady Hellbenders outfit is based on a bunnysuit, except made of armor and with gigantic shoulderpads and boots to boot.

Mei-fang wears one with the top part of a Chinese dress jacket worn over it.

The Chiesters wear one in this visual novel.

Emelia has to don one when she infiltrates the casino to collect information on Joker from the patrons.

The protagonist Erina wears one. Some members of the bunny-obsessed group UPRPRC also are dressed like this.

One special species of Pixie has an outfit like this. Its description notes that it's very popular among male breeders...

It has a ridiculously attractive News Reporter that keeps track of the player's progress. Most of the games have several unlockable Sexy Whatever Outfits for her, one of them being a Playboy Bunny.