The panties are (they're included in the set) but the top is the PPOriginal outfit Letitia for A3 which can be found in the PoserPros Store. I've found that using a combination of BreastSizes, Muscle and Young morphs will bring most clothes to fit A19 pretty closely. Though with magnets you'd get a better fit.

http://poserpros.daz3d.com/store/viewitem.php?selitem=9254 - Letitia for A3