Who makes tshirts good for curvy women?

I don't know if you only want high end or not, but Old Navy has a few different cuts of tees in every color depending on the fit you want.
 
Gap has a bunch of fitted tees and tanks. Is that what you are looking for?

I suppose you could get them in a bigger size if you want a looser fit.

Target long and lean tanks are very fitted too. I have not tried their tees.

I used to get graphic tees at lucy - 2 for $40, IIRC. I don't know if they still sell them, but the ones I have are really nice.

Try this thread too:

http://forum.purseblog.com/the-wardrobe/tell-me-about-your-basic-nice-dressy-t-897588.html
 
For t-shirts I shop at Target. Merona brand at Target are fairly fitted.

If you need t-shirts that will last more than one season, have them tailored. It adds a little expense, but get a size larger ( to fit across the bust line) and take the shirt to a tailor to have it fitted in the waist area.

I have had to do this with regular white long sleeved shirts.

If a shirt fits across the bust line, it's too large in the waist area. If it fits well in the waist area, it is tight across the bust line.

A good tailor is your friend.
 
Try Eileen fisher. Cap sleeves, V neck, round, boat neck, you name it. I am fairly busty and they work for me. They have a nice shape in cotton, linen, silk and all colors. I would try shopstyle.com and search eileen fisher for sales or myperfectsale