The midriff being exposed is not a trope on its own. One of the following tropes may fit instead:
- Age-Inappropriate Dress: A character wears a revealing outfit even though they are too young or too old to do so.
- Author Appeal: The author puts several characters in midriff-revealing outfits because they like them.
- Bare Midriffs Are Feminine: Female and feminine characters wear midriff-baring outfits more often than male and masculine characters.
- Bedlah Babe: Middle Eastern women are portrayed wearing midriff-baring clothes.
- Belly Buttonless: A clone or artificial being may wear a crop top to draw attention to their lack of belly button.
- Belly Dancer: A female character who wears revealing clothing for belly dancing, often including a belly-baring top.
- Chainmail Bikini: A character (usually female) wears skimpy armor, even if it's impractical.
- Clothing Damage: Ripping open a shirt, which may result in baring the midsection.
- Custom Uniform of Sexy: A character wears a uniform customized for fanservice, which can include a bared midriff.
- Exposed Animal Belly Button: An animal with a visible navel may wear a crop top.
- Exposed to the Elements: A character wears an outfit inappropriate for the weather, which can include a bared midriff in the winter.
- Fanservice: Bare midriffs, like other forms of partial nudity, are often used in a sexualized context.
- Fur Bikini: A two-piece outfit made out of fur, often used for fanservice.
- Go-Go Enslavement: An enslaved character is forced to wear revealing, often midriff-baring clothes by their captor.
- Lingerie Scene: A female character is shown in her underwear, typically bra and panties, for fanservice purposes.
- Meaningful Appearance: A character's exposed midriff tells you something about their personality or background.
- Ms. Fanservice: A female character who is there for eye candy, who will wear a midriff-baring outfit for fanservice.
- No Dress Code: A character gets away with wearing a midriff-baring outfit to school.
- Parental Fashion Veto: Midriff-baring outfits worn by teenage girls are a common reason for parental objections.
- Sailor Fuku: The Japanese sailor school uniform is already high-cut in real life, but media sometimes exaggerates it to reveal the midriff.
- School Sport Uniform: The ever-iconic Japanese PE shirt with thigh-revealing bloomers, which might result in exposed midriffs.
- Seashell Bra: A mermaid or other aquatic-themed character wears a top made from seashells (or starfish, or other aquatic items).
- Sensible Heroes, Skimpy Villains: A villain or antagonist wears a midriff-exposing outfit for fanservice, contrasted by heroic characters in less revealing clothes.
- Sexy Whatever Outfit: A ridiculous fanservice costume can often include a bared midriff.
- Shorttank: A stock anime character, a female deuteragonist who usually wears shorts and a tank top, shortened shirt optional.
- Stripperific: A fantasy character wears a highly revealing outfit, which can include a bared midriff.
- Tank-Top Tomboy: A female character wears a (possibly midriff-baring) tank top to indicate she is boyish or masculine in some way (such as an Action Girl, The Lad Ette or a Tomboy).
- Tertiary Sexual Characteristics: One way to indicate that a non-human character is female is to put them in midriff-baring clothes.
- Walking Swimsuit Scene: A female character always walks around wearing a swimsuit, typically a two-piece bikini.
- Workout Fanservice: Women are often shown working out in midriff-exposing tank tops or sports bras.
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