Dog Coat (Old Town TN40)

I have a brand new dogs coat which I bought for my dog but it was too small for her.
It is bright pink and would fit a larger dog maybe Labrador size. I bought it for my Rotweiller but she is too broad across her chest and it won't fasten.
I would like it to go to either an old dog or a street dog now the cold weather is arriving.
Genuine answers only please.