I debated between doing H&M or Express for the most affordable category, and ended up choosing the latter. Although H&M runs smaller (a 2 fits me perfectly) and is more affordable (full suit is around $80 retail), their suiting material can be downright cheap-looking sometimes. So when Express had a sale, I ordered the following suit for not much more than an H&M one:
Reviewing: Express Studio Stretch 1-Button Jacket in 00 ($98), and Editor Pants in 00 Short ($48), both in Medium Charcoal.
Front and side views:
The butch n' sassy look: