Princess seam dress in a stable cotton, sleeve cap eases in beautifully, no drag lines when my arms are down. The moment I reach forward for a steering wheel the entire bodice climbs and the waist seam ends up under my ribs. Bicep measures 33cm and I added 2cm of ease there. My instinct is that the sleeve is too tight but the sleeve genuinely is not tight when I am standing still.
Separately from the armhole, do the bicep as its own adjustment rather than by grading up a size. Slash the sleeve vertically down the middle from cap to hem, spread by the amount you need, then re draw the cap so it is a smooth curve rather than a peak with a step in it. 2cm of ease on a 33cm bicep in a stable cotton is on the tight side for a garment you drive in; I would want 3 to 4.
Redid it with a scooped armhole and 3.5cm bicep ease. I can reach the top shelf now. Bodice stayed put.
Also check the across back measurement. If the back is narrow between the armholes, every forward reach pulls the whole garment, and you will chase the sleeve forever without fixing it. Measure from armhole seam to armhole seam across your shoulder blades and compare with the pattern piece.
For a stable cotton with no give, a two piece sleeve or even a slight forward pitch on the sleeve makes a real difference on top of the above.
@seasonalpalette · 7mo ago · 3 replies
Your armhole is too low, not too small. This is the most counterintuitive thing in sleeve fitting and it catches everyone.
When the underarm point sits low, the fabric under your arm is joined to the side seam of the bodice. Lift your arm and there is nowhere for that join to go, so it drags the whole bodice up with it. Raise the underarm and the pivot point moves closer to your actual shoulder joint, and the bodice stays put.
Scoop the armhole up 1 to 1.5cm at the underarm, taper it back to nothing at the notches, and take the same amount off the side seam so the bodice is not now baggy under the arm. Then re measure the armhole and true the sleeve cap so the cap ease stays where it was, usually somewhere between 2 and 4cm total for a woven.
Many commercial patterns cut a deliberately low, generous armhole because it fits more bodies with no complaints when the arms are down. It also means nobody can lift their arms.
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@serger_seth · 7mo ago
Tailored jackets have famously high, small armholes for exactly this reason and people always assume it is the opposite.
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@leafspot_lia · 7mo ago
Take it in 5mm at a time. Going straight to 1.5cm on the first try and then having to add fabric back is not a fun afternoon.
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