Rectangle Body Shape : Styling Tips & Fashion Advice
H - RECTANGLE BODY SHAPE
All your measurements are uniform (within 5% of each other); your waist is straight rather than curvy and has a little definition (less than 25% smaller than your bust); likely have a small bust and flat hip.
Your arms and legs are the assets. So, focus on enhancing them rather than defining your waist.
Below you can find some basic recommendations that you can follow to balance your silhouette and enhance your look.