A 4X size generally corresponds to the following body measurements in inches: For Tops, Dresses, and Outerwear:

• Bust/Chest: 56.5" to 59"
• Waist: 49" to 51.5"
• Hip: 58.5" to 61"

For Pants, Jeans, and Shorts:

• Waist: 49" to 51.5"
• Hip: 58.5" to 61"

For Skirts:

• Waist: 49" to 51.5"
• Hip: 58.5" to 61"

Additional context on 4X sizing:

• It typically corresponds to US sizes 26/28.
• In some sizing systems, 4X can also indicate chest measurements around 57"-60" and waist around 54"-56" for men's clothing, but this varies by brand and garment type

• Variations exist such as 4XB (Extra Big, bigger in chest, neck, shoulders) and 4XT (Tall, longer length and arms), which are tailored differently than standard 4X

Thus, a 4X size is quite large, designed to fit body measurements roughly in the range of 56-59 inches bust/chest and 49-51.5 inches waist, with hips around 58.5-61 inches, depending on the garment type and brand.