Steve and Barry's just released a really cute line by Sarah Jessica Parker called Bitten, where everything from shoes to jeans is less than $15 [ Steve & Barry's ]
What exactly do you consider inexpensive? I would say forever 21, wet seal, hollister (i don't know if you consider hollister cheap or not). JC pennys has cute clothes sometimes. I actually shop at a lot of trendy consignment shops or thrift stores.
Old Navy, AE, Forever 21, Gap, H&M, Kohl's or JcPenny's. Just depends on how cheap you wanna go.. Target has really cute stuff sometimes, I always have a hard time with stuff fitting properly there though.
as far as super stores are concerned,i am in love with Loehmanns... the one in san francisco is my best friend. they mix in trendy brands with high end brands, but all quality clothes at incredibly jaw dropping prices.
that is where i bought my most favorite gucci and dolce and gabbana tops.
depending on what you want- making your own clothing can work out great value for clothes that are exactly what you want and fit to your shape exactly.
And am already making another one in a tattoo print fabric and some in really cheap £1.65 a metre cotton in various colours which means the dress will only cost £6 or less. At some point I'lll make ones with sleeves, different necklines, lengths, fabric- whatever I feel like at the time- all of which is proving to be alot less expensive than paying Topshop prices and much better quality than shopping in Primark