FlorboomShirts Womens Casual Button Up Blouse Long/Short/Sleeveless Sleeve Solid Color Swing Tops

Iam size 20\22 will 18\20 fit me all will it be two tight or should i go for 22 \24

How long is the short sleeve please from shoulder to hem?

I'm 160 cm tall, and i have 40 dd bra, so what size i should buy?

How easy is this to take off? I have frozen shoulder and need a stretchy fabric in order to take it off without assistance. Is this stretchy?