This is a black and white offbrand jsk and bolero I've had for a long, long time. The jsk has a criss cross back and has waist ties. The bow on the front is detachable. The bolero has removable sleeves
I'd say it's a small to medium

NOTE: Has damage
Since I've had this set for so long, it has some wear on it. Loose threads, maybe some damaged ribbon, wrinkles, pulled threads, minor damage to the lace, a little dusty, tiny stains that can easily come out, etc. It is in good condition but definitely not perfect
Comes from a smoke-free, pet-free home

Measurements
Bust from armpit to armpit lying flat: 15 inches
Waist lying flat across: 12 inches