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Emergency_Cherry_914 posted on r/sewhelp18w
This is little more than a basic bodice block which is slashed down the sides to add the detail strip, and square off the underarm panel. You will need facings for the side panel and the around the top of the arm. Butterick have a block pattern here https://www.amazon.com/dp/B005QSVPVO?starsLeft=1&ref_=cm_sw_r_apan_dp_KDXZ7JDN2Y24SRW95J05 The best way to deal with a full bust is to do a 'full bust adjustment' on your pattern. There are loads of tutorial on this.