I was able to get two slightly complicated dresses(a knit one and a color-blocked sheath) taken in. In both cases, the alterations subtly improved the cut of each to be more flattering and functional for me. The impeccable results are well worth the cost to keep these garments in my wardrobe.
I became aware of Mr. Field's establishment in the late eighties from several friends who thoroughly appreciate their services. I always planned on stopping in but never did until recently. I had an unusual request to repair a piece of tactical gear that couldn't be replaced and I was out of options. Mr. Field brought it back to better than new condition. I expect it to last another 30 years. If you're a professional who needs to ensure his tools of the trade aren't imprinting through a suit or jacket, and you can comfortably move than this is your place. Spend some time at Field and have a suit made. If your wardrobe is fully stocked, you may want to add protection to your suit lining so your tools don't imprint or wear through and extend the life of your jacket. You won't regret it.
Get estimates upfront if cost is an issue; this is a premium tailor and it can be hard to predict how much a complicate job, such as a gown, will cost. The work was excellent, a slice of Saville Row in DC.