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diagonal crease in seat of pants

njneedler | Posted in Fitting on

I have just finished a muslin of a pair of pants. The legs hand nicely and without the crease mentioned in the title the pants above the leg fit well insofar as comfort and ease.

The problem is that there is a diagonal crease which runs from the crotch curve to 2″ in from the side seam and 2″ below the waist. (Basically it ends at the bulge in my high hip.) At the center of the crease, the fold is about 1/2″ (or 1″ total) tapering to nothing at each end. It looks really ugly.

What kind of adjustment do I make to remove this diagonal crease and restore the fitting ease in the back?

Any ideas? Many thanks


  1. jjgg | | #1

    Can you possibly post a picture? I have trouble following words when something like this is described! As they say, a picture is worth a thousand words...

    is this crease in the front or the back?

    Edited 2/22/2008 6:10 pm ET by jjgg

    1. Josefly | | #2

      Heh. I think "crease in seat of pants" means in the back.

  2. NansiSews | | #3

    What's happening at the top of your center back seam?  does it pull down? I tried to make this happen on myself and it happened when I pull the pants up too much at the side seams, therfore the center back hangs down too low at the waist.  You may need more length in that seam either at the top or at the crotch point.  Sometimes you do this by slashing and spreading at the shorten lengthen line so you spread a desired amount athe center back but leave the side seam alone.

    Like someone else posted, a photo would help.  Do you have fuller derriere?  That would also account for the pull.

    Just hypothesizing.  Check a good pant fit book that has pictures.  I know there's one in the Singer series.

  3. sewornate | | #4

    I am guessing you have one hip smaller than the other.  Try your muslin on.  Tie a string around the waist; lift the side where the crease is until it disappears.  You can do this yourself if you have a three-way mirror.  If that solves the problem, draw a new waistline on that side.  You may have to deepen a dart or remove a bit at a side seam to get the lifted area to fit the waist. 

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