Kari Mecca has really nice patterns, they are a bit heirloom looking, but easily could be made more up to date - try heirlooms forever, elegant stitches or handmades, or farmhouse fabrics.
Childrens corner also have lovely patterns for kids, and many of the above sites have galleries that will give you good ideas as to how to make up the patterns, childrens corner, probably would be my favouite company because the pattern pieces fit so well together, and the sizing is pretty accurate I have found. I sew for my grand-daughters and grandson.
Daisy Kingdom also have dressy patterns, you can pick them up on e-bay. I only buy sale fabric for the kids, but if you keep your eye open, most of the above mentioned places also have clearance fabrics.
Addriennes attic also has patterns, and a large gallery to look at. Catimini, if you google it, sells kids shoes and clothes, and its always good to get good ideas.
I do like the kings daughters, as mentioned in the sites by nanners, I thought their patterns a bit dowdy, but the fabrics are a good price.
Also Sew Beautiful, always has patterns in it, and I have used them a lot and really like them, they have lots of ideas too.
You can get older copies on e-bay, but you can buy them from the stores I listed above. Of all the stores I think my favourite
would be farmhouse fabrics, great for service, and the parcels arrive with little extras, like packets of buttons and ribbon that matches what you bought - they have a great supply of other things, like lace, ribbon, trims. Oh and I am forgetting
Carol Harris of course. They are also nice. And remember, while the fabric maybe more expensive from these places, particularly
I am thinking corduroy, its often top quality.