Fully Figured Apron

For Christmas my sister asked for a full apron (one that covers her boobs) which is a challenge because my family are pretty full figured. I'm pretty curvy but my sister is a bit more vivacious than I am so it was a real challenge for me to try to figure out measurements to use for this, and I ended up not doing what I was intending to do originally- remember, measure twice- cut once. Yea that didn't happen the first time.