I love making my own clothes. More like I love the idea of making my own clothes, seeing as I'm not especially talented when it comes to sewing, nor do I have the time to sew; a bad combo. I've compiled a list of sorts that I've either had good experience with or have heard good reviews about; and hopefully you too can find useful.
I love Maurices' skirts! They tend to be on the pricier side (about $40 for their denim skirts), but they last forever. I bought a denim skirt there last summer and it's my favorite skirt I own. Their longer skirts tend to be looong. They hit me around my ankles (I'm 5'6"), so if you're shorter be ready to shorten it. They offer quite a few knee length skirts also. Most of the longer skirts I have a harder time finding in store, so the internet might be your best bet.
Maurices also sells blouses, cardigans, tanks, jewelry, etc. The shirts tend to run a little tight and low for my liking.
I won a New Creation Apparel skirt in a giveaway about 2 years ago and it's still going strong. They're skirts also run a little more expensive than what I like to pay, but the skirts are durable. They have a sales section for their skirts that would be worth paying attention to. They also have a good variety of maternity skirts, jackets, vests, and tops. The skirts tend to run small, so order up a size or two than what you normally wear.
I have never ordered clothing from here, but have heard good reviews about them. They offer a wide variety of modest skirts, dresses, jumpers, and blouses.
Simply Modest is like an online thrift shop with modest clothing. They sell gently worn or new modest clothing. They offer clothing for infants, girls, ladies, and pregnant women.
I haven't ordered from them before, so I can't say how their stuff fits or if it's durable or not. I have heard a couple good reviews about them though. Most of the women's suits have leggings that go down to the knees with a skirt over top.
I love the way Olivia Howard is able to take items that might be a little questionable modesty wise and turn them into something new and modest. She has two e-books out right now: one on denim skirts and the other on how to make your own modest swimsuit. She also offers a couple tutorials on her sewing blog and modest inspiration on her main blog.
Modest Handmaidens offers a wide variety of patterns, usually lower than the price of what you could find them at their original website. They offer patterns for everyone in the family ranging from pants to skirts, quilts to home accessories, headcoverings to aprons.
They offer patterns for the whole family. We've ordered several patterns from them before. The patterns tend to run small and sometimes the instructions aren't the best, but once you get the sizing right the items turn out great.