Congrats sa second baby, mama! From what I know, most OBs do try to follow the same incision line if possible kaya bikini cut should be bikini cut ulit, mas convenient para sa healing at cosmetic reasons din, pero honestly, it really depends sa OB mo kung ano ang makikita niya during surgery, lalo na kung may scar tissue na from the first one. I'd suggest tanungin mo na directly ang OB mo about this sa next checkup para peace of mind mo, kasi bawat pregnancy and surgery ay different, and she'll know best based sa condition ng scar mo ngayon!