I wear mostly thrifted clothing. I also often use thrifted clothing to cut apart and make into something new. This dress was a $2 or $4 thrift store purchase (I can't remember). I wish I had a before photo, it is an Old Navy XL dress. I cut it apart and used the Lane Raglan pattern to make it into a dress that fit me.
The best thing is that I was able to use the existing hems!
First, I picked the neck off the dress. This was the only time-consuming part.
Then I cut the dress up the sides as close to the seam as I could. I carefully cut off the arms (it was a regular set-in sleeve, not a raglan pattern dress).
I cut the arms up the middle seam of each so they would lie flat. The I cut the raglan pattern out of each side, making sure they were mirror images. I extended the body of the pattern down to the bottom of the dress, grading out as I went (used a dress I already had as a guide.) Then I just sewed the pattern together as normal, using the existing hems!
I wish the dress were longer so I leggings weren't necessary, but for $4, I can't complain.