From the manufacturer

	Passion for Comfort Underwire 3383	Passion for Comfort Minimizer Underwire 3385	One Smooth U Back Smoothing Underwire 3470	One Smooth U Smoothing & Concealing Underwire 3W11
	See Details	See Details	See Details	See Details
Side Smoothing	✓
Back Smoothing			✓	✓
Hidden Underwire	✓	✓
Silky Smooth Lining	✓	✓
Straps	Cushion/Adjust	Cushion/Adjust	Convert/Adjust	Comfort/Adjust

Find your best fitting bra

1) Wrap a tape measure snugly around your body and below your bust. After breathing out, take your measurement. If it's an even number that is your band size, but if it's an odd number, round up to the closest even number.

Find your best fitting bra

2) Wrap the tape measure around your chest at the fullest part of your breast. Subtract your band measurement from this number. If the difference is 1 inch, then you are an A cup; 2 inch, then you are a B cup; and so on, through DDD.

Find your best fitting bra

3) Combine your band measurement and your cup measurement to determine your correct size.