This was made from four xtra large men's shirts that I happened to have.
For the top shirt, I placed a t-shirt that fits me well on top of the men's shirt and traced down from the shoulder seam, through the arms eyes and a few inches beyond.
Then I cut it out. I cut out the sleeves and traced my t shirt sleeves on top, keeping the hem of the existing sleeves. Then I sewed the sleeves back in and down the side.
Originally, the top part was going to end below the bustline--like an empire waist. But I sewed it a little too tight, so I cut it off above the bust.
Then I cut up the remaining shirts into as wide a strips and I could get them. I figured how long I'd need each tier to be by timesing the upper tier by 1.5.
Then it was just a matter of gathering the current tier and sewing it onto the tier above it. I made certain that I had the hem from the t shirt for my bottom tier so I wouldn't have to hem it.
I love how the dress doesn't touch me below the bustline. Super Comfy.