Pencil Line Skirt

I'm having a relaxing time at a living now...
Just one thing, I have a little big problem with this skirt : ( Actually It feels so tight and my buttock so sore...
lol
Absolutely when I stand up ,this bottom's silhouette is beautiful.this pattern stripe makes my below waist more longer...:)

Cardigan..../Cami n Shoes...ZARA/Skirt...GVGV/Belt...H&M