The term "36DD" refers to a specific bra size, indicating both the band size and cup size. The number "36" represents the measurement around the ribcage, while "DD" denotes the cup size, which is larger than a standard D cup. This sizing system helps individuals find a bra that fits comfortably and provides adequate support. Bra sizes can vary between brands, so it's essential to try on different styles to find the best fit. Proper sizing is crucial for comfort and support, especially for those with larger busts. Many retailers offer fitting services to assist in determining the right size.