|Fiberfill can be used in any soft cup bra pattern to add some body and modesty.
Use iron-on fiberfill, and cut the pieces using the cup pattern. Press on and use as the inner lining for the cup pieces. I used it for KS 2375, which is more like a teen bra. The pattern is a soft cup/lace bra and has less support than an underwire bra, but with the fiberfill it provides enough for me... but then, I'm small. For this pattern, I cut the lining off at the underarm, just past the edge of the cup, and serged the edge as you'd see in RTW.
When I use it in my regular, underwire, "miracle bra" copy, I just add it to the cup pieces and sew it up as normal. It's great stuff...
With all the lingerie sewing going on, I hope this little tip helps.