Finding the right size panties is rough b/c I'm a man and I have more to work with down there in order to get the panties to fit right so I ordered it in a size 7 and it felt absolutely perfect as I was so lucky to discover these panties and their so silky and comfortable they feel real light on me. It feels like a dream to wear to these as I'm wearing the black ones with my black silky nightgown that I ordered from Vanity Fair and I haven't taken either garment off in the past two days that's how comfortable they are. If you're a man like me who likes to wear nightgowns then these are the perfect panties for you and a size 6, 7, or even 8 is the way to go if you're over 6 feet tall like I am and weigh around 200 lbs.