The Mallet is capable of making clothing. That was probably obvious because it was capable of making the super suit. But it can make other clothing too. The Mallet is the reason Evey has earrings. They didn't actually get their ears pierced. The earrings are basically the Mallet's equivalent of clip-ons.
Danae would make different outfits as well. In fact Danae would make frequent adjustments to her super suit. Danae had a secret identity though so she didn't really wear any of these outfits outside of the StarHammer persona. There were times where she really wanted to so she could make an impression or show someone up. But keeping her identity was one area where Danae had a lot of self-control.