Ladies New Camisole Cami Plain Strappy Swing Vest Top Flared Sleeveless

I am usually a 10/12. Can anyone advise me which size to buy?

I’m a 16/18. They look very roomy.. Would you recommend going down a size?

Purchases not received ordered 5 items 3 being the tops, did not receive them, assume there’s theiving going on somewhere within the system,

i am 44b usually size 18 which one should i go for ? It says 16-18 is 50cm but that is only just under 20 inches.