Here's some rather basic underwear. The bra does a pretty bad job at being a bra, but at least it's comfy. There's also some panties that match the style and aren't too revealing. That is unless you pick the lewd variant. Includes a couple of different fabric options as well as an undeployed bra variant.
Update: It's unisex-compatible now. Physics are rather flexible, but I do recommend playing with values such as distance scale to get the desired result.