COS | gathered maxi dress

Reposhing this item I purchased from @sunshinelilies. Loved the dress, but I probably need to size up. In perfect condition. Does not have materials and care tag, but website says materials are viscose and elastane. Fabric provides stretch. Approximate measurements: 23” armpit to armpit (batwing design) 47” length 13.5” back split length Weight of the dress is 0,77lb (350g)