Sue Brett Collection vintage long sleeved ladies dress size 18/20

Vintage Sue Brett Collection brand ladies long sleeved button down shirt waist dress, size 18/20. Dress has tailored panels down the front and buttons all the way down. Measures 23” from armpit to armpit and 47 1/2” from shoulder to hem. Size tag reads A4, I compared it to other dresses and size wise it matches an 18/20 in a Cato’s brand button down dress. The bust was slightly larger by an inch or so in this dress, but the waist measurement was the same. In excellent condition. Winter, Fall, vintage