Vintage Charles Bianco 100% midi dress in geometric pattern

Vintage (80s or early 90s) Charles Bianco Italian collection dress Size 10 but see measurements also as it is vintage. Photographed on size 8 mannequin 100% silk Black with a pattern of white grid and diamond shapes in purple, red, green etc V neck Elastic waist Short sleeves with cuffs There are also two slits in the back, right under the sleeves - see photos. To be honest not sure what they are for With shoulder pads that are only lightly attached and can be removed relatively easily Preowned, excellent condition 2335