I've been getting my jeans hemmed here for the last month, then realized Toy will make custom dresses. I'm from CA and it was hard for me to find an exceptional tailor that knew exactly what she was doing (esp. with high-end items). She's fast and so sweet! I definitely recommend this place, if you want your alterations done right or a one-of-a-kind dress made for a special occasion, this is the place to go.
The shop is located upstairs in the Brentwood Office Building next to Mazatlan. What a good find (only found out about it from one of the owner's past customers!). The store is hidden, but what a gem!