Had once the chance to try one on. That one was knitted in size M and fitted my figure very well. Only it was a little bit short for me.
To be on the safe side choose size XL for my actual 3XL.
Knitting the body 3 cm longer.

Getting almost gauge with 3.5mm needles. Fabric is very, very strechy. I would never use a strechy material for this pattern, such as wool or acrylic. Needed a little more yarn, because I made the cardigan a little longer.

The simple stich pattern is very pretty and with aran yarn its a quick knit.The sleeves are almost as large as the back. Very interesting raglan construction.

Love the result - very well fitting. The sleeves are very wide but not uncomfortable. Looking forward to wear this outside on warmer spring days.