Simplicity 2634. If you aren't familiar with Khaliah Ali, she is the daughter of Muhammad Ali, and fashion designer of plus size clothes and patterns. She's collaborated with Simplicity patterns to produce a really great line of plus size patterns. I graded it down to fit me, as I thought the design was just great, and it wasn't available yet in the misses size range. The top has a belt and pleats under the bust.
I'm really happy with the end result. It works great with the turtleneck for winter, and equally good with a cami for warmer weather.