PukguroSheer Shawls and Wraps for Evening Dresses Chiffon Capes for Women Soft Wedding Cover Up

Q: does the shawl button in back, or go over the head to wear such as a collar shawl ( the photo looks like a collar shawl) or open in back?

it has no button in the back,and it is go over the head(a hole in the head)

Q: Is Purple true to color ?

I have no idea. I bought the Navy Blue and it is very much true to color

Q: What is the length (in inches) of the shawl in the back. (If you don't know, please don't answer. It's not helpful.)

The chiffon shawl is 12 inches in front, and 23 inches in the back, dear.

Q: I am 5'1' tall and weigh 119 pounds...Will this swallow me?

My wife is 5’2, 110lbs and it fit beautifully. She feels comfortable in it and felt like it fit her perfectly. It comes down just below her bottom in the back and just below her breasts in the front (she is bustier than most, though, so it may come down a bit lower for others). She felt very elegant in this item and highly recommends it.