I'm guessing this is handmade as no label is evident. As with most handmade items from the 70's it has been nicely tailored and finished.
The fabric is a nicely weighted polyester so no ironing necessary. White with a dark brown and beige polka dot design it is an eye catching little number. Edged in a dark brown binding along the neck and front edges as well as at the cuff of the long sleeves, the jacket it tailored at the back and bust.

Underarm to underarm 20" / 51cm approx 40" / 102cm chest
Shoulder to shoulder 16.5" / 42cm
Shoulder to cuff 23" / 58cm
Underarm 17" / 43.5cm
Back of neck to hem 16.5" / 42cm
Across lower hem of jacket 16" / 41cm

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Thanks, Debbie

Vintage 70's Brown Polka Dot Short Dress Jacket M/L