Rectangle body shape is a figure where the bust, waist and hips are close in size. The rectangle rule is a bust and hips within 3.6 inches (9.1 cm) of each other and a waist less than 9 inches (22.9 cm) smaller than the bust and less than 10 inches (25.4 cm) smaller than the hips.

Rectangle body shape, also called straight or banana, is one of the body shape types chart. Rectangle body shape has a straight side outline with little waist definition. You can use the body shape calculator with four measurements to confirm a rectangle body shape.
What Are the Rectangle Body Shape Measurements?
The rectangle body shape measurements are a bust and hips within 3.6 inches (9.1 cm) of each other and a waist less than 9 inches (22.9 cm) smaller than the bust.
| Measurement comparison | Rule (in) | Rule (cm) | Example (in) | Example (cm) |
|---|---|---|---|---|
| Bust vs hips | within 3.6 | within 9.1 | 35 vs 36 | 88.9 vs 91.4 |
| Bust − waist | < 9 | < 22.9 | 35 − 30 = 5 | 88.9 − 76.2 = 12.7 |
| Hips − waist | < 10 | < 25.4 | 36 − 30 = 6 | 91.4 − 76.2 = 15.2 |
The rectangle rule is based on the FFIT classification by Lee, Istook, Nam and Park (2007).
How Do You Know If You Have a Rectangle Body Shape?
A rectangle body shape shows four signs.
- Straight sides: the side outline runs nearly straight from bust to hips.
- Little waist curve: the waist is only slightly narrower than the bust and hips.
- Balanced width: the shoulders and hips look the same width.
- Even weight gain: weight gain spreads across the torso.
Measuring confirms the signs, following measure bust, waist and hips.
What Are the Types of Rectangle Body Shape?
Rectangle body shape has two common variations.
- Rectangle with tummy: a rectangle body shape with fullness at the abdomen; when the waist reaches the bust and hips, the result becomes apple.
- Athletic rectangle: a rectangle body shape with muscular shoulders and hips and a straight waist.
What Should You Wear With a Rectangle Body Shape?
Clothes for a rectangle body shape create a waist. Peplum tops and belts add a waist curve, and layered outfits add shape at the bust and hips. The guide to rectangle body shape outfits lists dresses, jeans and tops.
How Does Rectangle Compare With Other Body Shapes?
Rectangle body shape differs from every other body shape by bust, waist and hips that are close in size.
- Rectangle vs inverted triangle: an inverted triangle bust is at least 3.6 inches (9.1 cm) larger than the hips, while a rectangle bust stays within 3.6 inches of the hips.
- Rectangle vs hourglass: an hourglass has the same balanced bust and hips but a waist at least 9 inches (22.9 cm) smaller than the bust.
- Rectangle vs apple: an apple waist is equal to or larger than the bust and hips, while a rectangle waist is slightly smaller.
- Rectangle vs pear: a pear has hips at least 3.6 inches (9.1 cm) larger than the bust.
- Rectangle vs spoon: a spoon has hips larger than the bust, a defined waist and a high-hip shelf.
What Is the Waist-to-Hip Ratio of a Rectangle?
The waist-to-hip ratio of a rectangle body shape is moderate to high, because the waist is close to the hips; the example 30-inch waist and 36-inch hips give a ratio of 0.83. The WHR tool returns your own ratio.
Can Men Have a Rectangle Body Shape?
Yes, men can have a rectangle body shape, which the male calculator returns when the chest is less than 5 inches wider than the waist.
Can Your Body Shape Change?
Your body shape can change when weight gain, weight loss or muscle gain changes your bust, waist or hips by different amounts, because the rectangle rule compares these measurements with each other.
What Should You Avoid With a Rectangle Body Shape?
A rectangle body shape looks straighter in shapeless, boxy cuts that hide the waist, so styling for a rectangle body shape adds definition at the waist instead.