This is the abbreviated (ha) version of the Cake Leggings pattern.
this pattern has edits for the cuffs, the waistband, and the ribbing.

if you think you can figure it out on your own and you want the leggings pattern too, you could make do with just the cake leggings pattern.

this pattern is knit in the round from the top down and split for the legs and gusset.
it uses short rows to shape the butt.