Vintage 1970s Mod Red Plaid Dress with Huge White Collar, Joan Curtis Size Large

Red Plaid shirt dress from the 70s that buttons just over halfway down. It has a large pointed collar. Brand - Joan Curtis Content - 100% Polyester Size - Labeled Size 16, approximately a modern Large but please check all measurements to ensure fit Shoulders - 16" across Chest - 21" pit to pit Sleeves - 23.25" from shoulder seam Waist - approximately 19.5" across Hips - approximately 21.75" across Length - 40" Condition - I found a pin size spot on the cuff