For the best fit on the Iris Bralette, you will want the vertical seam to fall in line with the apex.
Moving the Apex In: adjust the vertical Seam in the Annika wireless Bra
Iris Bralette: Camisole Pattern Hack
Iris Bralette Tutorial: Moving the Vertical Seam
Iris Bralette Pattern Hack: Front Closure
Iris Bralette Tutorial: Moving the Vertical Seam
PARTS OF A BRA, Fit Au Max
Beginners Guide to Making Your Own Bras — LilypaDesigns
Bra-A-Week: Week 33! - Emerald Erin
Free Patterns Archives - Stitch11
Bralette Tutorial With Pattern DIY
Bra
Make It Your Own: Horizontal to Vertical Seam