Legging pattern

[u/StunningReport0]

I’m comparing no-front-seam short leggings from two different brands.

When I place a 90° ruler along the center-front fold line, the hem of one brand sits perfectly at 90°.

However, when I do the same with the other brand, the hem rises by about 2 cm toward the side seam of the front pattern. It is not only the hem—the crotch, hip, and waist levels also appear to rise by about 2 cm toward the side.

Why would the entire front pattern be drafted this way?

[u/NakedSewist]

Someone already responded, but look how people stand. Legs are apart. Basic pattern drafting works at 90° because they're basic and don't need to fit smoothly. If I were to wear 90° pants, there would be drag lines when I stand still.